First I lined my round cake pan with plastic wrap and filled it with vanilla ice cream, covered it with more plastic wrap and put it in the freezer overnight. I also made another ice cream layer in a rectangle shape (about the size of a Twinkie but half of the height.)
Once they were frozen solid I removed the plastic wrapped ice cream from the cake pan and put it in the freezer again.
Then using two cake pans (the same one used for the ice cream) I baked a two yellow with sprinkles cake layers and a small square cake about the size of two Twinkies. I let them cool for a few hours and cut the square in half to use for the body.
I cut the cake layers and the ice cream layer in half and a notch out of each side. Below is a diagram from Betty Crocker.com
I followed the diagram above creating three layers: cake, ice cream and lastly cake.
I then whipped some more vanilla ice cream in the mixer. I frosted the cake with the whipped ice cream very fast, covered it with more plastic wrap and froze again.
Princess G loved her cake as did all of her friends and their Moms. It was harder than a normal ice cream cake I have made but that is what she wanted!