Oven Omelette
["1 lb. sausage, bacon or ham, diced", "6 slices bread, cubed", "9 eggs, beaten", "3 c. milk", "1 1/2 tsp. salt", "1 1/2 tsp. dry mustard", "1 1/2 c. shredded Cheddar cheese", "1 large can mushrooms"]
["Cook sausage and/or fry bacon.", "Mix with remaining ingredients.", "Set in refrigerator overnight in a greased 9 x 13-inch pan.", "Bake at 350\u00b0 for 45 minutes."]
["sausage", "bread", "eggs", "milk", "salt", "dry mustard", "Cheddar cheese", "mushrooms"]