While nothing says fall better than a slice of warm apple pie, three-ingredient apple dump cake dishes up the same warm fall flavors with a fraction of the work. Layer — or, rather, dump — canned apple pie filling, box cake mix, and thinly sliced butter in a baking dish and bake. Then, dig into the crisp, golden crust and warm cinnamon-spiced apple filling. This simple dessert will be your fall go-to.