http://www.klickitatstreet.com/2013/03/how-to-draw-on-cookie-with-ipad.html

This tutorial explains it better than I can, but I am looking forward to using this for some My Little Pony cookies I have to make this week!

I saw that as well and once my hubby makes me the stand, I plan on purchasing that app! Great of her to share her find with us!