Apple Dump Cake

24 ounces, apple pie filling (2 Cans)
2 Tablespoons cinnamon
1 box yellow cake mix
2 sticks butter
1 cup old fashioned oatmeal

Dump two cans of apple pie filling into a 9×13 pan. Sprinkle with cinnamon. Crumble the dry cake mix over the apple mixture. Sprinkle the oatmeal over the cake mix. Slice the butter up into 12 equal pieces, and place the pieces on top.

Cook at 375F for about 50 minutes or until golden brown. Serve with whipped cream or vanilla ice cream.