When baked as directed, this dessert comes out much like a cobbler. The topping is much more crunchy and biscuit-like. If you would rather more of a cake-like topping, you would make this in a 9x13 casserole dish, and make the cake mix into a batter based on package instructions. Pour the batter on top of the fruit filling and bake.
To make this a bit more like a pineapple upside down dump cake, use rum extract in place of the vanilla extract.