Egg Bake

3 cups cubed ham
3 cups stale bread, cubed
8 oz shredded cheddar cheese
3 T. flour
1 T. dry mustard
4 eggs
3 cups milk
3 T. margarine melted

Grease 9 x 13-inch pan. Place 1/3 ham, bread and cheese in pan. Sprinkle 1/3 flour and mustard over this layer. Repeat to make 3 layers. Beat eggs and milk until foamy; add melted margarine. Pour over top of dry ingredients. Cover and set in refrigerator overnight (will keep a couple of days). Bake at 350 degrees for 1 hour.