8 oz. macaroni cooked and drained
1 can mushroom soup
1 c. mayonnaise
1/4 c. pimentos
1/4 c. chopped onion
1 lb. sharp grated cheese
1 c. mushrooms
Pepperidge farm regular stuffing
Butter

Mix all ingredients and top with stuffing. Dot with butter. Bake at 400 degrees for 15 to 20 minutes.