One of the many differences between boys and girls

I asked Kaitlin, John and Marisa to help me with some cookies a few weeks ago. I put the cookies in the oven and when the timer went off, they were to get the cookies out of the oven and decorate them. Marisa went first, then Kaitlin. When it was John's time he was back in half the time as the girls. Can you guess which cookie John decorated?