2 (10 oz. each) pkg. frozen lima beans
1 c. diced celery
1 (10 3/4 oz.) cream of mushroom soup
1 (2 1/2 oz.) mushroom pieces
1 (2 oz.) can pimentos
Grated sharp cheese
1 c. diced onion
1/4 c. butter

Cook beans in small amount of water 15 minutes. Blend remaining ingredients together except cheese and add to beans. Pour into greased casserole and bake at 350 degrees for 40 minutes. Sprinkle cheese over top of mixture and bake 5 minute longer.