Lemon Pillow Cake

Ingredients
1 Lemon Cake Mix
1 can lemon pie filling
1 can lemon frosting
1 8 oz carton frozen whip topping

Directions
Mix cake mix according to package directions. Put in greased 9x13 pan. Drop dollops of pie filling from a spoon over top, until can is used. Bake according to manufacturer's directions. When cool, fold together can of frosting and whip topping. Frost cake. Store cake in refrigerator.