16 slices wheat or white sandwich bread
1 lb. cubed ham
1/2 lb. sharp Cheddar cheese, grated
1 1/2 cups Swiss cheese, cut into small pieces
6 eggs, beaten
3 cups milk
1/2 tsp. onion salt
1/2 tsp. dry mustard
1 1/2 cups crushed corn flakes
1/2 cup butter, melted

Grease a 11x14 inch glass baking dish. Spread half of the bread cubes evenly in a buttered dish. Spread ham and both cheeses evenly in dish. Cover with remaining bread cubes.

Mix eggs, milk, onion salt and mustard. Pour evenly over bread cubes and refrigerate overnight.

Combine corn flakes and butter for topping.

Bake in a preheated 375°F oven for 45 minutes. Let set 5 minutes before serving.