Preheat oven to 350 degrees.
In a 9x13" pan, dump pie filling into bottom of the pan.
Sprinkle cake mix evenly on top of filling.
Distribute the butter on top of the cake mix.
Spread the pecans evenly over the butter and cake mix.
Finally, sprinkle the sugar over all.
Bake for 30 to 40 minutes and serve warm.