Sausage And Egg Casserole

1 lb. cooked sausage

6 eggs, slightly beaten

2 c. milk

1 tsp. salt

Pepper

1 tsp. dry mustard

2 slices bread, crushed

1 c. grated cheese

3 Tbsp. chopped onion

Drain sausage; mix all together. Bake at 350° for 45 minutes.