Pineapple Upside Down Cake 1 Duncan Hines pineapple supreme cake mix 1 stick margarine 1 ½ cups light brown sugar 1 large can pineapple rings maraschino cherries Mix cake as directed on box. Melt margarine in long oblong baking dish. Sprinkle brown sugar over margarine. Lay pineapple slices in dish then put a cherry in middle of each slice. Pour batter over pinapples then bake as directedon box. Let cool for about 5 minutes then turn cake upside down onto a foil-lined cookie sheet.