Easy Cherry Dessert
["2 cans cherry pie filling (or any kind pie filling)", "1 box white or yellow cake mix", "1/4 lb. butter or margarine", "whipped cream (optional)"]
["Butter 9 x 13-inch cake pan; put pie filling evenly over bottom of pan.", "Cover with dry cake mix.", "Slice 1/4 pound butter over top of cake mix.", "Bake at 375\u00b0 until bubbly and brown.", "May be served with whipped topping."]
["cherry pie filling", "white", "butter", "whipped cream"]