Preheat oven to 350 degrees and grease a 1 1/2-2 quart size baking pan or dish. In a mixing bowl, mix sugar and flour together. Stir pineapple chunks into flour and sugar mixture. Place in greased baking dish. Sprinkle evenly with cheese. Add cracker crumbs and spread evenly. Drizzle melted butter or margarine over casserole. Bake at 350 degrees for 35 minutes till topping is browned and the edges are bubbling slightly. Remove and cool till set (10-20 minutes). Serve hot or at room temperature. Delicious!
