There is no need to drain the pineapple when you’re making dump cake. You need all the juices from your canned fruit to add moisture to the cake. Since this recipe doesn’t contain eggs or oil, you can’t skip the juice from the cans or your cake will be too dry. Instead, add all the fruit and juice to the pan. As the dump cake bakes, the juice will mix with the butter and cake mix to create a delicious crust on top of your dessert. And when you use the coconut, too, the crust gets the best texture and a gorgeous golden brown.