You have to get the Pampered Chef apple corer. It is the BEST! I take a cooled cupcake and hold the cupcake in my left hand almost sideways. Then I insert the apple corer into the center and with a slight twist am able to pull out the center very easily. I then fill the center (I use a squeeze bottle) about half way. Then the pampered chef corer has a little slidey thing that slides the center out of the corer and back into the hole. Works like magic!!!