Prep this overnight breakfast casserole at night, heat in the morning and serve.
Spray a casserole dish with cooking spray.
Combine cooked sausage and bread together and put it into a casserole dish. Sprinkle cheese over the top.
In a separate bowl combine the eggs, dry mustard, milk and Worcestershire sauce. Pour over mixture in oval dish.
Cover with foil and put in the fridge overnight.
Bake the next morning at 325 degrees without foil for one hour.