Lexie's Breakfast Casserole

1 lb. sausage
5 eggs
2 c. skim milk
1 T dry mustard
1 t. salt
1 t. pepper
1 c. cheddar cheese, grated
1 c. Mozzarella cheese, grated
8 slices bread, cubed

Grease 9 x 13 in. pan. Beat eggs and add milk, salt, pepper, and dry mustard. Layer bread cubes in bottom of pan. Pour egg mixture over bread, Cover with grated cheeses. Brown and drain sausage. Crumble sausage on top of cheese. Cover and refrigerate overnight. Bake at 350 degrees for 45 min. Revove foil and bake until golden. Serves 6

Sometimes I throw some chopped onion in pan before browning sausage. I also sometimes add green pepper at this time.