Quick Dessert Royale
["1 cake mix", "2 sticks butter or margarine", "1 can pie filling"]
["Mix or cut butter into the cake mix. Put this mixture in 9-inch pan, reserving a little for topping. Make a \"well\" in middle of mixture. Put pie filling in middle of well; sprinkle reserved mixture (or crust) on top of filling.", "Bake at 350\u00b0 until \"crust\" starts to turn golden. Serve hot. May top with ice cream or Cool Whip"]
["cake", "butter"]