16 slices firm white bread
2 1/2 c. cooked, cubed ham, about 1 lb.
16 oz. cheddar cheese, shredded
16 oz. Mozzarella cheese, shredded
6 eggs
3 c. whole milk
1/2 tsp. dry mustard
1/8 - 1/4 tsp. onion powder

TOPPING:

3 c. uncrushed corn flakes
1/2 c. butter, melted

Trim crusts from bread; cut slices in half. Grease a 13"x9"x2" baking pan and layer as follows. Cover bottom of pan with one half of bread, one half of ham and one half of each of the cheeses. Repeat layers. Combine eggs, milk and seasonings. Pour over layers, refrigerate overnight. Remove from refrigerator 30 minutes before baking. Combine topping ingredients; sprinkle over casserole. Bake at 375 degrees for 45 minutes. (Cover loosely with foil to prevent top from over browning.) Let stand 10 to 15 minutes before cutting into squares. Yield: 12 to 15 servings.