These healthy Halloween treats are a tiny bit finicky to make. Your first few faces might not be perfect. But you'll get the hang of it quickly and will then be pumping out jack-o'-lanterns faster than your kids can gobble them. Note: The icing called for here gets firm quickly so that you don't have to worry about it rubbing off if you're transferring them in a container to school. But I still pack them in a single nonoverlapping layer.