3 c. cooked macaroni 2 c. grated cheese 1/2 c. mayonnaise 1 med. onion, sauteed 1 sm. bottle chopped pimentos 1 can mushroom soup Ritz cracker crumbs
Chop and saute onion. Mix together and pour into casserole. Top with cracker crumbs. Dot with butter. Bake at 350 degrees until light brown and bubbly.