Fabulous Ham And Cheese Souffle
["16 slices white sandwich bread, cut off crust and cube", "1 lb. cubed ham", "1 lb. sharp Cheddar cheese, grated", "1 1/2 c. Swiss cheese, shredded", "6 eggs", "3 c. milk", "1/2 tsp. onion salt", "1/2 tsp. dry mustard", "3 c. crushed corn flakes", "1/2 c. melted butter"]
["Grease 9 x 10-inch glass dish.", "Spread half of the bread cubes evenly in the dish.", "Add the ham and both cheeses, then cover with remaining bread cubes.", "Mix eggs, milk, onion salt and mustard. Pour evenly over bread cubes and refrigerate overnight."]
["white sandwich bread", "ham", "Cheddar cheese", "Swiss cheese", "eggs", "milk", "onion salt", "dry mustard", "corn flakes", "butter"]