Breakfast

Melt the butter in a small saucepan.
Add the flour and stir over a medium heat until blended.
Gradually add the milk, whisking continuously into a smooth sauce.
Simmer gently for 2–3 minutes until the sauce has thickened.
Mix in the mustard, nutmeg, salt, and pepper; set the béchamel aside.
Preheat a grill to high and lightly toast the bread on both sides under the grill.
Arrange slices of ham and cheese on each slice of bread, then top with béchamel sauce.
Place back under the grill to brown the béchamel and melt the cheese until golden.
Serve hot.
This recipe is adapted from Wikibooks. It is licensed under Creative Commons Attribution-ShareAlike 4.0 International.