1 cake mix, yellow or white
1/2 c. water
1/4 c. oil
2 eggs
1 can pie filling (cherry, peach, blueberry, etc.)

In the bottom of a 9 x 13 pan, pour the first 4 ingredients in. Then drop by spoonfuls all of the can of pie filling, here and there. Swirl into the batter. Bake at 350 degrees for the amount of time on the cake box for a 9 x 13 pan.