Preheat oven to 350. Grease (I use butter) a round or square baking dish (cake pan). Pour pie filling into pan. Sprinkle with pumpkin pie spice. Pour the box of cake mix over pie filling, breaking up any lumps with your fingers and evening out over fruit. Melt the butter and pour over cake mix. Bake for 15-20 minutes or until bubbly and golden brown.