18 Delicious Croque Monsieur Recipes for Every Occasion

Craving something cheesy, crispy, and utterly comforting? Look no further! Our roundup of 18 Delicious Croque Monsieur Recipes is here to save your day, whether you’re whipping up a quick weeknight dinner or hosting a fancy brunch. From classic takes to creative twists, there’s a perfect sandwich for every occasion. Dive in and discover your next favorite meal—your taste buds will thank you!

Classic Croque Monsieur

Nothing says comfort like a Classic Croque Monsieur, the French answer to the ultimate grilled cheese sandwich, with a creamy béchamel twist.

Ingredients

• 2 tbsp unsalted butter
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/4 tsp salt
• 1/4 tsp black pepper
• 1/8 tsp nutmeg
• 4 slices white bread
• 4 slices ham
• 1 cup grated Gruyère cheese
• 1 tbsp Dijon mustard

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. In a small saucepan over medium heat, melt 2 tbsp butter. Whisk in 2 tbsp flour and cook for 1 minute until golden.
3. Gradually whisk in 1 cup milk until smooth. Add 1/4 tsp salt, 1/4 tsp black pepper, and 1/8 tsp nutmeg. Cook, stirring, until thickened, about 5 minutes. Remove from heat.
4. Spread 1 tbsp Dijon mustard on 2 slices of bread. Top each with ham and half of the Gruyère cheese. Cover with the remaining bread slices.
5. Spread the béchamel sauce over the tops of the sandwiches. Sprinkle with the remaining Gruyère cheese.
6. Bake at 400°F for 10 minutes, then broil for 2-3 minutes until the cheese is bubbly and golden.

The magic of this Croque Monsieur lies in the luxurious béchamel sauce that transforms it from a simple sandwich into a decadent meal.

Tip: For an extra crispy top, place the sandwiches under the broiler for the last few minutes of cooking.

Croque Monsieur with Béchamel Sauce

Transform your lunch into a Parisian bistro experience with this classic Croque Monsieur, layered with creamy béchamel and melted cheese.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 2 tbsp all-purpose flour
• 1 cup whole milk, warmed
• 1/4 tsp salt
• 1/4 tsp black pepper
• 1/8 tsp ground nutmeg
• 4 slices of ham
• 1 cup grated Gruyère cheese
• 1 tbsp Dijon mustard

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of butter on one side of each bread slice and toast in a skillet over medium heat until golden, about 2 minutes per side.
3. In a saucepan, melt the remaining 1 tbsp butter over medium heat. Whisk in 2 tbsp flour and cook for 1 minute. Gradually add 1 cup warm milk, whisking constantly until the sauce thickens, about 3 minutes. Stir in 1/4 tsp salt, 1/4 tsp black pepper, and 1/8 tsp nutmeg.
4. Spread Dijon mustard on two toasted bread slices. Top each with ham and half of the Gruyère cheese. Cover with the remaining bread slices, buttered side up.
5. Spread the béchamel sauce over the sandwiches and sprinkle with the remaining cheese. Bake for 10 minutes, then broil for 2 minutes until bubbly and golden.

The magic of this Croque Monsieur lies in the béchamel sauce, which turns crispy under the broiler while keeping the inside luxuriously creamy.

Tip: For an extra indulgent twist, add a fried egg on top to make it a Croque Madame.

Ham and Cheese Croque Monsieur

Transform your lunch into a Parisian bistro experience with this classic Ham and Cheese Croque Monsieur, a grilled sandwich that’s as indulgent as it is comforting.

Ingredients

• 4 slices of thick white bread
• 2 tablespoons unsalted butter, softened
• 1 tablespoon Dijon mustard
• 4 slices of Swiss cheese
• 4 slices of ham
• 1/2 cup grated Gruyère cheese
• 1/4 cup heavy cream
• 1/4 teaspoon salt
• 1/4 teaspoon black pepper

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tablespoon of unsalted butter on one side of each bread slice. Flip and spread 1 tablespoon of Dijon mustard on the other side.
3. Layer 2 slices of Swiss cheese and 2 slices of ham on the mustard side of two bread slices. Top with the remaining bread slices, buttered side up.
4. In a small bowl, mix 1/2 cup of grated Gruyère cheese with 1/4 cup of heavy cream, 1/4 teaspoon of salt, and 1/4 teaspoon of black pepper. Spread this mixture over the top of each sandwich.
5. Bake at 400°F for 10 minutes, then broil for 2-3 minutes until the topping is bubbly and golden brown.

The secret to its irresistible appeal? A creamy Gruyère topping that turns golden and crisp under the broiler, adding a luxurious texture to every bite.

Tip: For an extra touch of elegance, serve with a simple green salad dressed in a light vinaigrette.

Turkey Croque Monsieur

Transform your leftover turkey into a luxurious sandwich with this Turkey Croque Monsieur, a twist on the classic that’s perfect for a cozy lunch or dinner.

Ingredients

• 2 tbsp unsalted butter
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp nutmeg
• 4 slices sourdough bread
• 4 slices turkey breast
• 4 slices Gruyère cheese
• 1/2 cup grated Parmesan cheese

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. In a small saucepan over medium heat, melt the butter. Whisk in the flour and cook for 1 minute until bubbly. Gradually whisk in the milk, salt, pepper, and nutmeg. Cook, stirring constantly, until the sauce thickens, about 3 minutes. Remove from heat.
3. Place the sourdough slices on the baking sheet. Spread half of the sauce over two slices. Layer each with turkey and Gruyère, then top with the remaining bread slices.
4. Spread the remaining sauce over the tops of the sandwiches and sprinkle with Parmesan.
5. Bake for 10 minutes, then broil for 2-3 minutes until the tops are golden and bubbly.

The combination of creamy béchamel and melted Gruyère with savory turkey creates a sandwich that’s irresistibly rich and satisfying.

Tip: For an extra crispy top, let the sandwiches broil for an additional minute, but keep a close eye to prevent burning.

Vegetarian Croque Monsieur

Transform the classic French sandwich into a vegetarian delight with this creamy, cheesy Vegetarian Croque Monsieur that’s sure to impress.

Ingredients

• 4 slices of sourdough bread
• 2 tbsp unsalted butter, softened
• 1 tbsp all-purpose flour
• 1 cup whole milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp nutmeg
• 1 cup grated Gruyère cheese
• 1/2 cup grated Parmesan cheese
• 4 slices of ripe tomato
• 1 cup baby spinach leaves

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of butter on one side of each bread slice and toast in a skillet over medium heat until golden, about 2 minutes per side. Set aside.
3. In a small saucepan, melt the remaining 1 tbsp butter over medium heat. Whisk in 1 tbsp flour and cook for 1 minute. Gradually add 1 cup milk, whisking constantly until the mixture thickens, about 3 minutes. Stir in 1/2 tsp salt, 1/4 tsp black pepper, and 1/4 tsp nutmeg.
4. Remove the saucepan from heat and stir in 1/2 cup Gruyère and 1/4 cup Parmesan until melted.
5. Place two slices of toasted bread on the prepared baking sheet. Top each with half of the spinach, two tomato slices, and half of the cheese sauce. Sprinkle with the remaining Gruyère and Parmesan. Cover with the remaining bread slices, buttered side up.
6. Bake for 10 minutes, then broil for 2-3 minutes until the top is bubbly and golden.

The secret to this sandwich’s irresistible appeal lies in the nutty Gruyère and the hint of nutmeg in the béchamel, creating a depth of flavor that’s both comforting and sophisticated.

Tip: For an extra crispy top, lightly butter the outer sides of the assembled sandwiches before baking.

Croque Monsieur with Gruyère Cheese

Transform your lunch into a Parisian bistro experience with this classic Croque Monsieur, layered with nutty Gruyère and a creamy béchamel sauce.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/4 tsp salt
• 1/4 tsp ground nutmeg
• 1 cup grated Gruyère cheese
• 4 slices of ham
• 1 tbsp Dijon mustard

Instructions

1. Preheat your broiler to high and position the rack 6 inches from the heat source.
2. Spread 1 tbsp of Dijon mustard evenly over 2 slices of bread, then layer each with 2 slices of ham and 1/4 cup of Gruyère. Top with the remaining bread slices.
3. In a small saucepan over medium heat, melt 2 tbsp of butter. Whisk in 2 tbsp of flour and cook for 1 minute until golden. Gradually whisk in 1 cup of milk, 1/4 tsp of salt, and 1/4 tsp of nutmeg. Cook, stirring constantly, until the sauce thickens, about 3 minutes.
4. Spread the béchamel sauce over the top of each sandwich, then sprinkle with the remaining Gruyère.
5. Broil for 3-5 minutes until the cheese is bubbly and golden brown.

The magic of this Croque Monsieur lies in the béchamel sauce, which turns crispy under the broiler while keeping the inside luxuriously creamy.

Tip: For an extra indulgent twist, add a fried egg on top to make it a Croque Madame.

Croque Monsieur with Swiss Cheese

Transform your lunch into a Parisian bistro experience with this classic Croque Monsieur, layered with creamy béchamel and nutty Swiss cheese.

Ingredients

• 4 slices of thick white bread
• 2 tbsp unsalted butter, softened
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/4 tsp salt
• 1/4 tsp black pepper
• 1/8 tsp nutmeg
• 4 slices of Swiss cheese
• 4 slices of ham
• 1/4 cup grated Gruyère cheese

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of butter on one side of each bread slice. Place them butter-side down on the baking sheet.
3. In a small saucepan over medium heat, melt the remaining 1 tbsp of butter. Whisk in 2 tbsp of flour and cook for 1 minute. Gradually add 1 cup of milk, whisking constantly until the mixture thickens. Stir in 1/4 tsp salt, 1/4 tsp black pepper, and 1/8 tsp nutmeg.
4. Layer each bread slice with 1 slice of Swiss cheese, 1 slice of ham, and a generous spoonful of béchamel sauce. Top with another slice of bread, butter-side up.
5. Sprinkle 1/4 cup of grated Gruyère cheese evenly over the sandwiches. Bake for 10-12 minutes, then broil for 2-3 minutes until the cheese is bubbly and golden.

The secret to this Croque Monsieur’s irresistible crunch? A double dose of cheese—melty Swiss inside and a crispy Gruyère crust on top.

Tip: For an extra indulgent twist, try adding a fried egg on top to make it a Croque Madame.

Croque Monsieur with Cheddar Cheese

Transform your lunchtime with this indulgent Croque Monsieur, swapping traditional Gruyère for sharp cheddar for a delightful twist.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 1 tbsp all-purpose flour
• 3/4 cup whole milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/8 tsp nutmeg
• 1 cup shredded sharp cheddar cheese
• 4 slices of ham
• 1 tbsp Dijon mustard

Instructions

1. Preheat your broiler to high and position the rack 6 inches from the heat source.
2. Spread 1 tbsp of butter on one side of each bread slice. Toast under the broiler for 1-2 minutes until golden, then set aside.
3. In a small saucepan over medium heat, melt the remaining 1 tbsp butter. Whisk in 1 tbsp flour and cook for 1 minute. Gradually add 3/4 cup milk, whisking constantly until the sauce thickens, about 3 minutes. Stir in 1/2 tsp salt, 1/4 tsp black pepper, and 1/8 tsp nutmeg.
4. Remove from heat and stir in 1/2 cup cheddar cheese until melted.
5. Spread 1 tbsp Dijon mustard on the untoasted side of two bread slices. Top each with 2 slices of ham, then drizzle with half the cheese sauce. Cover with the remaining bread slices, toasted side up.
6. Spread the remaining cheese sauce over the tops and sprinkle with the remaining 1/2 cup cheddar cheese.
7. Broil for 3-4 minutes until the cheese is bubbly and slightly browned.

The sharp cheddar adds a bold depth to the creamy béchamel, making this Croque Monsieur a standout with its rich, tangy flavors.

Tip: For an extra crunch, try using sourdough bread instead of white bread.

Croque Monsieur with Emmental Cheese

Transform your lunchtime with this classic Croque Monsieur, a French grilled cheese that’s all about the melty Emmental and creamy béchamel.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/4 tsp salt
• 1/4 tsp black pepper
• 1/8 tsp nutmeg
• 4 slices Emmental cheese
• 4 slices ham
• 1/2 cup grated Gruyère cheese

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread butter on one side of each bread slice. Place them butter-side down on the baking sheet.
3. In a small saucepan over medium heat, melt 1 tbsp butter. Whisk in flour and cook for 1 minute. Gradually add milk, whisking constantly until the mixture thickens. Stir in salt, pepper, and nutmeg.
4. Layer Emmental cheese and ham on two bread slices. Spread béchamel sauce over the ham, then top with the remaining bread slices, butter-side up.
5. Sprinkle Gruyère cheese on top of each sandwich. Bake for 10 minutes, then broil for 2-3 minutes until the cheese is bubbly and golden.

The secret to this Croque Monsieur’s irresistible appeal? The nutmeg-infused béchamel that adds a subtle depth to every bite.

Tip: For an extra crispy top, place the sandwiches under the broiler for the last minute of cooking.

Croque Monsieur with Prosciutto

Elevate your sandwich game with this luxurious Croque Monsieur, layered with crispy prosciutto and creamy béchamel for a French bistro experience at home.

Ingredients

• 4 slices of thick-cut white bread
• 4 slices of Swiss cheese
• 4 slices of prosciutto
• 2 tbsp unsalted butter
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/4 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp nutmeg
• 1/2 cup grated Gruyère cheese

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. In a small saucepan over medium heat, melt 2 tbsp butter. Whisk in 2 tbsp flour until smooth, then gradually add 1 cup milk, stirring constantly until the mixture thickens. Season with 1/4 tsp salt, 1/4 tsp black pepper, and 1/4 tsp nutmeg. Remove from heat.
3. Lay out the bread slices on the baking sheet. Top each with a slice of Swiss cheese, a slice of prosciutto, and a generous spoonful of the béchamel sauce. Sprinkle with grated Gruyère.
4. Bake for 10-12 minutes, then broil for 2-3 minutes until the cheese is bubbly and golden brown.

The magic of this Croque Monsieur lies in the crispy prosciutto that adds a salty crunch against the velvety béchamel and melted cheese.

Tip: For an extra indulgent twist, try adding a fried egg on top to make it a Croque Madame.

Croque Monsieur with Smoked Salmon

Elevate your brunch game with this luxurious twist on the classic Croque Monsieur, featuring smoky salmon for an unforgettable flavor.

Ingredients

• 4 slices of thick-cut sourdough bread
• 2 tbsp unsalted butter, softened
• 1 tbsp Dijon mustard
• 4 oz smoked salmon, thinly sliced
• 1 cup grated Gruyère cheese
• 1/2 cup heavy cream
• 1/4 tsp freshly ground black pepper
• 1/4 tsp salt

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of unsalted butter on one side of each sourdough bread slice. Place them butter-side down on the baking sheet.
3. Evenly spread 1 tbsp of Dijon mustard over the unbuttered sides of the bread.
4. Layer the smoked salmon on two of the bread slices, then sprinkle with 1/2 cup of grated Gruyère cheese each.
5. Top with the remaining bread slices, butter-side up, to form sandwiches.
6. In a small saucepan, heat 1/2 cup of heavy cream with 1/4 tsp of salt and 1/4 tsp of freshly ground black pepper until just simmering. Pour evenly over the sandwiches.
7. Sprinkle the remaining 1/2 cup of Gruyère cheese on top of the sandwiches.
8. Bake at 400°F for 15-20 minutes, until the cheese is bubbly and the edges are golden brown.

The creamy Gruyère and smoky salmon meld together under a golden crust, creating a dish that’s as visually stunning as it is delicious.

Tip: For an extra crispy top, broil the sandwiches for the last 2 minutes of baking.

Croque Monsieur with Avocado

Transform the classic Croque Monsieur into a creamy, dreamy delight with the addition of ripe avocado. This twist adds a fresh, buttery layer that perfectly complements the rich béchamel and ham.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/8 tsp nutmeg
• 4 slices of Black Forest ham
• 1 ripe avocado, sliced
• 1 cup shredded Gruyère cheese
• 1 tbsp Dijon mustard

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of butter on one side of each bread slice. Place them butter-side down on the baking sheet.
3. In a small saucepan over medium heat, melt the remaining 1 tbsp of butter. Whisk in the flour to form a roux, cooking for 1 minute. Gradually add the milk, whisking constantly until the sauce thickens. Stir in the salt, black pepper, and nutmeg.
4. Spread Dijon mustard on the unbuttered side of two bread slices. Top each with 2 slices of ham, half of the avocado slices, and a quarter of the Gruyère. Drizzle with half of the béchamel sauce, then top with the remaining bread slices, butter-side up.
5. Spread the remaining béchamel over the tops of the sandwiches and sprinkle with the remaining Gruyère.
6. Bake for 15-20 minutes, until the cheese is bubbly and golden. Let cool for 5 minutes before serving.

The creamy avocado melts slightly in the oven, creating a luxurious texture that pairs wonderfully with the crispy, cheesy exterior. It’s a brunch showstopper that feels indulgent yet approachable.

Tip: For an extra crispy top, broil the sandwiches for the last 2 minutes of baking.

Croque Monsieur with Tomato

Elevate your sandwich game with this Croque Monsieur with Tomato, a delicious twist on the classic French grilled cheese that’s perfect for a cozy lunch or brunch.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 1 tbsp Dijon mustard
• 4 slices of Swiss cheese
• 4 slices of ham
• 1 medium tomato, thinly sliced
• 1/2 cup grated Gruyère cheese
• 1/4 cup heavy cream
• 1/4 tsp salt
• 1/4 tsp black pepper

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of unsalted butter on one side of each bread slice. Flip and spread 1 tbsp Dijon mustard on the other side.
3. Layer 2 slices of Swiss cheese, 2 slices of ham, and half of the tomato slices on two bread slices (mustard side up). Top with the remaining bread slices, butter side out.
4. In a small bowl, mix 1/2 cup grated Gruyère cheese, 1/4 cup heavy cream, 1/4 tsp salt, and 1/4 tsp black pepper. Spread this mixture over the top of each sandwich.
5. Bake at 400°F for 15 minutes, then broil for 2-3 minutes until the topping is bubbly and golden.
6. The creamy Gruyère topping adds a luxurious texture to this sandwich, while the tomato brings a fresh, juicy contrast to the rich flavors.

Tip: For an extra crispy finish, lightly butter the outside of the bread before assembling the sandwich.

Croque Monsieur with Spinach

Transform your lunchtime with this indulgent Croque Monsieur, elevated with a layer of fresh spinach for a touch of green goodness.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 1 tbsp all-purpose flour
• 1 cup whole milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp nutmeg
• 1 cup grated Gruyère cheese
• 4 slices of ham
• 1 cup fresh spinach leaves
• 1 tbsp Dijon mustard

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of butter on one side of each bread slice and toast in a skillet over medium heat until golden, about 2 minutes per side. Set aside.
3. In a saucepan, melt the remaining 1 tbsp butter over medium heat. Whisk in 1 tbsp flour and cook for 1 minute. Gradually add 1 cup milk, whisking constantly until the sauce thickens, about 3 minutes. Stir in 1/2 tsp salt, 1/4 tsp black pepper, and 1/4 tsp nutmeg. Remove from heat and mix in 1/2 cup Gruyère until melted.
4. Spread Dijon mustard on two toasted bread slices. Layer with ham, spinach, and a spoonful of the cheese sauce. Top with the remaining bread slices, buttered side up.
5. Spread the remaining cheese sauce over the sandwiches and sprinkle with the remaining 1/2 cup Gruyère. Bake for 10 minutes, then broil for 2 minutes until bubbly and golden.

The crispy, cheesy exterior gives way to a creamy, spinach-studded center, making every bite a delightful contrast of textures.

Tip: For an extra crispy top, place the sandwiches under the broiler for the last minute of cooking.

Croque Monsieur with Mushrooms

Elevate your lunch game with this indulgent Croque Monsieur, layered with earthy mushrooms for a twist on the classic.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, divided
• 1 cup sliced cremini mushrooms
• 1 tbsp all-purpose flour
• 3/4 cup whole milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp nutmeg
• 1 cup grated Gruyère cheese
• 4 slices of ham
• 1 tbsp Dijon mustard

Instructions

1. Preheat your oven to 400°F. Melt 1 tbsp butter in a skillet over medium heat. Add mushrooms and cook until golden, about 5 minutes. Set aside.
2. In the same skillet, melt remaining 1 tbsp butter. Whisk in flour to form a roux, cooking for 1 minute. Gradually add milk, whisking until smooth. Stir in salt, pepper, and nutmeg. Cook until thickened, about 3 minutes. Remove from heat and stir in half the Gruyère until melted.
3. Spread Dijon mustard on two bread slices. Top each with ham, mushrooms, and a spoonful of cheese sauce. Cover with remaining bread slices.
4. Spread the top of each sandwich with remaining cheese sauce and sprinkle with remaining Gruyère. Place on a baking sheet and bake for 10 minutes, then broil for 2 minutes until bubbly and golden.

The creamy béchamel and Gruyère create a luxurious melt, while the mushrooms add a depth of flavor that makes this Croque Monsieur unforgettable.

Tip: For an extra crispy top, let the sandwiches sit for a minute after broiling to set the cheese.

Croque Monsieur with Caramelized Onions

Transform your lunch game with this Croque Monsieur, elevated by the sweet depth of caramelized onions. It’s a French classic that feels right at home on any American table.

Ingredients

• 2 tbsp unsalted butter
• 1 large yellow onion, thinly sliced
• 1/2 tsp sugar
• 1/4 tsp salt
• 4 slices thick-cut white bread
• 2 tbsp Dijon mustard
• 4 slices Gruyère cheese
• 4 slices ham
• 1/2 cup grated Parmesan cheese
• 1/2 cup heavy cream

Instructions

1. Melt 1 tbsp butter in a skillet over medium heat. Add the onion, sugar, and salt. Cook, stirring occasionally, for 20 minutes until golden and caramelized. Remove from heat.
2. Preheat your broiler to high. Spread Dijon mustard on one side of each bread slice. Layer Gruyère, ham, and caramelized onions on two slices, then top with the remaining bread, mustard-side down.
3. Melt the remaining 1 tbsp butter in a skillet over medium heat. Cook the sandwiches for 3 minutes per side until golden.
4. Transfer sandwiches to a baking sheet. Mix Parmesan and heavy cream, then spread over the tops. Broil for 2 minutes until bubbly and golden.

The magic here is in the contrast: crispy, cheesy exterior giving way to a creamy, onion-laced interior. It’s a sandwich that demands to be eaten with a knife and fork.

Tip: For an extra indulgent twist, add a fried egg on top to make it a Croque Madame.

Croque Monsieur with Pesto

Transform your classic Croque Monsieur into a vibrant, herby delight with this pesto-infused version that’s as easy to make as it is delicious.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp nutmeg
• 1 cup grated Gruyère cheese
• 4 slices of ham
• 2 tbsp pesto
• 1/4 cup grated Parmesan cheese

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of butter on one side of each bread slice and toast them butter-side down in a skillet over medium heat until golden, about 2 minutes per side. Set aside.
3. In a saucepan, melt the remaining 1 tbsp butter over medium heat. Whisk in 2 tbsp flour and cook for 1 minute. Gradually add 1 cup milk, whisking constantly until the sauce thickens, about 3 minutes. Stir in 1/2 tsp salt, 1/4 tsp black pepper, and 1/4 tsp nutmeg.
4. Remove the saucepan from heat and stir in 1/2 cup Gruyère until melted. Spread this béchamel sauce over the untoasted sides of the bread.
5. Layer ham and 1 tbsp pesto on two slices, then top with the remaining slices, sauce-side down. Spread the top of each sandwich with remaining béchamel, sprinkle with remaining 1/2 cup Gruyère and 1/4 cup Parmesan.
6. Bake on the prepared sheet for 10 minutes, then broil for 2-3 minutes until bubbly and golden.

The pesto adds a fresh, garlicky punch that cuts through the richness of the cheese and ham, making every bite perfectly balanced.

Tip: For an extra crispy top, place the sandwiches under the broiler for the last minute of baking.

Croque Monsieur with Truffle Oil

Elevate your sandwich game with this luxurious Croque Monsieur, drizzled with aromatic truffle oil for an unforgettable twist on the classic.

Ingredients

• 4 slices of thick-cut white bread
• 2 tbsp unsalted butter, softened
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp nutmeg
• 1 cup grated Gruyère cheese
• 4 slices of ham
• 1 tbsp truffle oil

Instructions

1. Preheat your oven to 400°F and line a baking sheet with parchment paper.
2. Spread 1 tbsp of softened butter on one side of each bread slice. Place them butter-side down on the baking sheet.
3. In a saucepan over medium heat, melt the remaining 1 tbsp of butter. Whisk in 2 tbsp of flour until smooth. Gradually add 1 cup of milk, whisking constantly until the sauce thickens. Stir in 1/2 tsp salt, 1/4 tsp black pepper, and 1/4 tsp nutmeg. Remove from heat and mix in 1/2 cup of Gruyère cheese until melted.
4. Spread the cheese sauce over two bread slices. Top each with 2 slices of ham and the remaining Gruyère cheese. Cover with the remaining bread slices, butter-side up.
5. Bake for 10 minutes, then flip the sandwiches and bake for another 10 minutes until golden and crispy.
6. Drizzle each sandwich with 1/2 tbsp of truffle oil before serving.

The truffle oil adds a decadent depth to the creamy, cheesy layers, making this Croque Monsieur a standout dish for any brunch or lunch.

Tip: For an extra crispy finish, broil the sandwiches for the last 2 minutes of baking.

Conclusion

We hope this roundup of 18 Delicious Croque Monsieur Recipes inspires your next meal, whether it’s a cozy family dinner or a fancy brunch with friends. Each recipe offers a unique twist on the classic, ensuring there’s something for every taste and occasion. Don’t forget to try them out, share your favorites in the comments, and pin this article to your Pinterest boards for easy access. Happy cooking!