Minced onions and green peppers could be put over meat layer if you are not serving it for breakfast.
In a 9x13 inch casserole, place a layer of bread, then a layer of ham, and top with a layer of cheese. Then top with remaining layer of bread. Beat eggs, milk, and seasonings. Pour mixture over casserole contents and let stand in refrigerator 8 hours, or until needed.
Sprinkle Rice Chex over casserole. Dot with butter. Bake 1 hour at 350 degrees.