Here's a quick recipe for you and it's deeelicious

In a rectangular baking dish start with a can of sweetened crushed pineapple. Over that, layer a can of blueberry pie filling. Next layer is a box of butter recipe cake mix. Spread as many chopped pecans as you like for the next layer. Last, drizzle a stick of melted butter over all. Bake at temperature indicated on cake mix box for 30-35 minutes. No mess, not even a mixing bowl!