Sonic the Hedgehog cake My first frozen buttercreme transfer. Surprisingly it wasn't very hard. Just watch YouTube videos and bought color gel paste and somewhat of a steady hand. My son wanted a Sonic the Hedgehog cake and so he got. I can't take the credit for the whole cake. I ordered the cake with white frosting the piping around the cake and a blank top. I just flipped my transfer on top. After some touch ups adding rings it was finally complete.