Egg Souffle Casserole

Directions

1. 1
   Combine sausage, bread and Cheddar cheese.
2. 2
   Put into flat 10 x 9-inch baking dish.
3. 3
   Combine eggs, salt, milk and mustard.
4. 4
   Pour over sausage mixture.
5. 5
   Cover and chill overnight (optional). Combine mushroom soup and milk.
6. 6
   Pour over casserole and bake, covered, at 325° for 1 1/2 hours.
7. 7
   During last 20 to 30 minutes, remove cover so casserole can brown slightly.