1/2 lb. bacon or sausage, cooked
6 slices bread, torn in sm. pieces
6 eggs, beaten
2 c. milk
1/2 lb. cheese, grated
1/2 tsp. mustard

Preheat oven to 300 degrees. Grease baking dish. Combine all ingredients and mix well. Bake in oven for 1 1/4 to 1 1/2 hours. Do not open oven door. Middle of casserole will puff up when done. Let stand 10 minutes before serving. Casserole can be mixed up the night before and baked the next day.