Elevate your lunch with this simple and delicious Croque Monsieur recipe! Discover how to make this classic French sandwich featuring layers of ham, gooey cheese, and a creamy béchamel sauce. Perfect for impressing guests or treating yourself, this dish is easy to prepare and absolutely mouthwatering.
4 slices of thick-cut white bread
4 slices of ham (preferably from a good quality deli)
4 slices of Gruyère cheese (or Swiss cheese)
2 tablespoons Dijon mustard
2 tablespoons unsalted butter (softened)
1 tablespoon all-purpose flour
1 cup milk (whole or 2%)
1/2 teaspoon nutmeg (freshly grated if possible)
Salt and pepper to taste
Extra Gruyère cheese for topping (optional)