2 1/2 c. seasoned croutons
1 1/2 lb. sausage, cooked and crumbled
4 eggs, beaten
2 1/2 c. milk
1 can cream of mushroom soup
1 (4 oz.) can sliced mushrooms, drained
3/4 tsp. dry mustard
2 c. grated cheddar cheese

Spread croutons in a lightly greased 13 x 9 baking dish. Sprinkle sausage over croutons. Combine rest of ingredients, except cheese; pour over sausage. Cover and refrigerate overnight.

Bake at 325 degrees for 50-55 minutes. Sprinkle cheese over top and bake 5 more minutes.