Step 1: You will need:
9x13 (or slightly larger) baking dish
Oil or cooking spray
At least 20 ounces (up to about 40) of cherry pie filling
2 sticks butter
Mini chocolate chips
1 box light colored cake mix (yellow, white, or lemon for sure work)
Measuring spoons, butter knife, and large spoon for stirring
Pecans or other nuts for topping (not shown in this 'ible)
Step 2: Filling
Coat the bottom and sides of your baking dish with cooking spray or oil. I actually was so excited to make this that I forgot to do it - it does make clean up a lot easier later.
Dump in your cherry pie filling. I only used about 20 ounces of filling in this dump cake. It was tasty, and everyone liked it, but I thought it could have used a better filling-to-cake ratio.
Add about 1 Tablespoon of vanilla extract, a little more or a little less to suit your taste. I wouldn't go too much less though.
Finally, add 1/3 to 1/2 cup or so of mini chocolate chips. Add the larger amount if you use more than 20 ounces of cherry pie filling. Or if you just REALLY like chocolate :)
Now stir it all up to get the vanilla and chocolate chips mixed in, and smooth it out along the bottom of your baking dish.