Description
A classic French Croque Monsieur sandwich made with layers of ham and Gruyère cheese, topped with creamy béchamel sauce and baked to golden perfection with a sprinkle of Herbes de Provence. This rich and savory sandwich is perfect for a comforting lunch or brunch.
Ingredients
Béchamel Sauce
- 3 tablespoons unsalted butter
- 3 tablespoons all-purpose flour
- 2 cups milk, scalded
- ⅛ teaspoon ground nutmeg
- ¼ teaspoon salt, or to taste
- ¼ teaspoon white pepper
Sandwich
- 8 slices thick-cut white bread
- 1 tablespoon Dijon mustard
- 12 slices Black Forest ham, thinly sliced
- 8 ounces Gruyère cheese, shredded
- 1 teaspoon Herbes de Provence
Instructions
- Preheat Oven: Preheat your oven to 425°F (218°C) and line a baking sheet with parchment paper to prepare for assembling and baking the sandwiches.
- Make Béchamel Sauce – Melt Butter: In a saucepan over medium-low heat, melt the unsalted butter carefully without browning it.
- Add Flour: Whisk in the all-purpose flour into the melted butter and cook for 2 to 3 minutes, stirring constantly to form a roux and cook out the flour taste.
- Whisk in Milk: Gradually pour in the warm, scalded milk while continuously whisking until the mixture is smooth and free of lumps.
- Season and Thicken: Add ground nutmeg, salt, and white pepper to the sauce and continue cooking, whisking frequently, for about 5 minutes until the béchamel thickens to a creamy consistency.
- Taste and Adjust: Taste the béchamel sauce and adjust salt or seasoning as needed to your preference.
- Toast Bread (Optional): Lightly toast the slices of thick-cut white bread to add structure to the sandwiches, though this step can be skipped if desired.
- Spread Sauces on Bread: Spread béchamel sauce on four slices of the bread and Dijon mustard on the other four slices.
- Assemble Bottom Layer: Place the béchamel-coated bread slices béchamel-side down onto the prepared baking sheet.
- Add Fillings: Layer shredded Gruyère cheese, thinly sliced Black Forest ham, and more Gruyère cheese evenly over the bottom slices.
- Top Sandwich: Place the remaining four bread slices on top with the mustard side down to complete the sandwich layering.
- Add Final Topping: Spread the sandwiches with the remaining béchamel sauce, then sprinkle additional shredded Gruyère cheese and a teaspoon of Herbes de Provence over the top.
- Bake and Broil: Bake the assembled sandwiches in the oven for 5 to 7 minutes until bubbling, then switch to broil for 2 to 3 minutes or until the tops are golden brown and slightly crispy.
Notes
- Using thick-cut white bread gives the sandwich a hearty texture but feel free to use brioche or sourdough for variation.
- Scalding the milk before adding to the béchamel helps in achieving a smooth sauce without lumps.
- Lightly toasting the bread before assembling prevents sogginess but is optional.
- Watch carefully during the broiling step to prevent burning the cheese.
- For a Croque Madame, add a fried egg on top after baking.