Get out the crockpot or slow cooker and use your clean fingers to grease the sides and bottom real good with a dab of butter..
Dump in 2 cans of apple pie filling. Then, dump in a box of spice cake mix. (Are you beginning to see why it's called a "Dump" cake?) You can spread it out some DON'T stir it or mix the layers!
Dump some cinnamon, brown sugar and chopped up nuts on top of that.
Finally, cover the whole top with a cube of butter cut into thin layers.
Put the lid on and let it cook for about 3 hours.