1 (8 oz.) box Elbow macaroni
1 lb. sharp cheese, grated
1 c. mayonnaise
1 sm. jar pimentos
1 sm. onion, chopped
1 can mushroom soup
1/4 stick melted butter
1 c. Ritz crackers

Cook macaroni as directed on box. Drain and mix with all other ingredients. Cover with crackers mixed with butter. Put in large dish. Bake at 350 degrees for 20 to 25 minutes.