Croque monsieur ou madame

• 8 slices white bread
• 4 slices ham
• 100 g

Preheat the grill.

To make the béchamel sauce, melt the butter in a saucepan and sprinkle the flour on top. Stir into a paste with a wooden spoon and cook very gently for 2 minutes.

Add the milk, using a whisk if lumps form, and heat gently until it comes to the boil, then simmer very gently, stirring constantly. Add the cheese and nutmeg as the sauce thickens. Take it off the h