Pineapple Au Gratin
["2 (20 oz.) cans pineapple chunks, drained", "1 c. sugar", "6 Tbsp. plain flour", "2 c. sharp cheese, grated", "1 c. Ritz cracker crumbs", "1/4 c. melted margarine"]
["Mix together pineapple, sugar, flour and cheese.", "Place mixture in a greased 1 1/2-quart casserole dish. Cover top with cracker crumbs and drizzle with melted margarine. Bake at 350\u00b0 for 25 minutes."]
["pineapple", "sugar", "flour", "sharp cheese", "cracker crumbs", "margarine"]