Penthouse Casserole
["1 pkg. Kraft Deluxe macaroni and cheese dinner", "1 can cream of celery soup", "1 can tuna fish, drained", "1 (4 oz.) jar mushrooms, drained", "1/2 c. milk", "2 Tbsp. finely chopped onion", "1 1/2 c. soft bread crumbs", "1/4 c. melted margarine"]
["Prepare Kraft dinner as directed on package.", "Add soup, tuna fish, mushrooms, milk and onion; mix well.", "Pour into a 2-quart casserole."]
["macaroni", "cream of celery soup", "tuna fish", "mushrooms", "milk", "onion", "bread crumbs", "margarine"]