8 oz. shell macaroni, half cooked
1 can cream of mushroom or celery soup
1/4 c. pimiento, chopped
1/4 c. onion, chopped
1/2 lb. sharp cheese, shredded
1 c. mayonnaise
1 sm. can mushrooms
Cheese cracker crumbs

Combine all ingredients, except cracker crumbs. Grease 9"x9" baking dish and sprinkle with cracker crumbs. Add macaroni mixture. Sprinkle with more crumbs, dot with butter. Bake at 300 degrees for 25 minutes.