Birthday Cake - Corn Free

The other day, my neighbor wanted me to make a birthday cake for her daughter.  It was last minute, and we didn't have a lot of time, but still wanted to make it fun for her 4 year old.  My daughter asked, can we make it corn free, so I can have some at the party?  She was kind enough to agree and so the adventure began.  This is just a better picture of the marshmallow frosting I posted awhile ago. The frosting itself is gluten free but the cake was just corn free.  Enjoy!