Penthouse Casserole
["1 pkg. Kraft macaroni and cheese Deluxe dinner", "1 (10 3/4 oz.) can cream of celery soup", "1 (6 1/2 oz.) can chicken, flaked", "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. margarine, melted"]
["Prepare dinner as directed on package.", "Add soup, chicken, mushrooms, milk and onion.", "Mix well.", "Pour into 2-quart casserole; top with bread crumbs tossed with margarine.", "Bake at 350\u00b0 for 30 to 35 minutes or until thoroughly heated."]
["macaroni", "cream of celery soup", "chicken", "mushrooms", "milk", "onion", "bread crumbs", "margarine"]