2 1/2 c. seasoned croutons
2 c. shredded cheddar cheese
1 can cream of mushroom soup
1 (4 oz.) can mushrooms
2 lbs. sausage, browned
2 1/2 c. milk
3/4 tsp. dry mustard
4-6 eggs (I use 6)

In a 9"x12" greased pan, layer croutons, cheese and sausage. Combine remaining ingredients. Pour over layers. Refrigerate overnight. Bake 1 1/2 hours at 300 degrees.