You can add pudding mix in various flavors to make a delicious, moist cake like we do for our coconut cake, pistachio cake, and lemon cupcakes. In this recipe, instead of adding pudding mix to the cake mix we instead add bananas to the cake mix for added flavor, then we poke holes in the cake and top with vanilla pudding and banana slices. This gives the pudding a banana flavor that soaks into the cake as it sits.