Cook sausage until browned; drain and set aside. Spread croutons in a lightly greased baking dish. Sprinkle sausage over croutons. Combine next 4 ingredients; mix well and pour over sausage. Cover and refrigerate overnight.
Bake uncovered at 325 degrees for 50 to 55 minutes. Sprinkle cheese over top; and bake for an additional 5 minutes or until cheese melts.