Melt 1/2 stick of margarine in a Pyrex® dish. Mix one cup flour, one cup sugar, 1 teaspoon. baking powder, and one cup of milk into a batter. Pour over melted margarine. Spoon one large can of cherry pie mix (or any kind your heart desires) over batter. Bake 350 for 30 minutes and WOW. Please serve warm with ice cream or Cool Whip®.