How adorable are these Mini Firecracker Cakes? You can whip up a batch using a homemade white cake recipe, but we'd recommend using a boxed white cake mix if you're short on time. You can also swap out the red licorice wicks for frilled toothpicks. Be sure to prepare within an hour or so of serving, because the Pop Rocks will only keep their 'pop' for 3-4 hours. Whether you're looking for a patriotic Memorial Day dessert or need a large batch of treats for your Fourth of July cookout, we know your guests will love a tray of these mini cakes.