I made mine in an 8x8 baking dish, which is still more than enough for Timmy and I, but I'll give you the recipe for a 9x13 dish instead. It is a very very easy cake to make, and pretty much just requires you to "dump" everything in the pan. Hence the name! This is adapted from my mom's way of making it, but I'm sure there are other recipes out there if you're looking for something different.
2 (21 ounce) cans apple pie filling
1 box yellow cake mix
1-1.5 sticks (or cups) of butter
9x13 baking dish
Preheat oven to 350 degrees (325 if you're using a glass baking dish)
Dump apple pie filling into bottom of baking dish.
Sprinkle top of apple filling evenly with the yellow cake mix. Do not stir!!!
Evenly distribute butter onto the top of the cake mix.
(Easy way to do this? Slice off little pats of butter and place them evenly on top. OR take a squeeze bottle of butter and distribute evenly...make sure it's butter! Margarine makes it taste different)
Place in oven and let bake for 40-45 minutes, or until top is bubbly and golden brown.
Let cool, and enjoy! Use a spoon as a serving tool, this is not a firm cake by any means. Tastes amazing with some vanilla ice cream on the side, and can be eaten hot or cold. Seriously delicious.
Apple pie filling can be replaced with cherry, pineapple, peaches, or whatever else you think might taste good. I love cherry dump cake as well! I've also heard of people mixing cherry and pineapple together, then dumping it in the bottom. Quite a few people sprinkle walnuts or pecans on top of the cake mix, but neither of us are a huge fan, so I left them out.
Hope you like! Try it out and let me know how it goes. The apple pie filling is considerably sweet, so take that into account before you decide what fruit to use.