1 large jar prepared sauce
1 lb. small uncooked pasta
sliced mushrooms
8 oz. cream cheese
8 oz. sour cream

Mix together sauce, mushrooms and pasta; set aside. Beat cream cheese and sour cream; mix into pasta mixture. Place in greased large casserole dish, cover and refrigerate for 24 hours.

Bake at 350°F for 50 minutes; uncover and bake another 30 minutes.