To make the cake I lined a springform cheesecake pan with parchment paper. Then I scooped softened strawberry ice cream into the lined pan. After smoothing the strawberry ice cream out, I put it back in the freezer to harden. A few hours later, I sprinkled crushed oreos and put a layer of vanilla frosting over the crushed cookies. The top layer was half vanilla and half chocolate Phish Food ice cream. I returned the cake pan in the freezer for several hours to harden again. When I took it out of the freezer, I ran a knife around the edge of the pan to loosen it before opening the springform pan to remove the sides of the cake pan. Then I turned it onto a serving plate. Once again, I returned the cake to the freezer to harden before icing the frosting with a buttercream frosting and decorating with monogrammed M&Ms. The process might have been easier if I had done some research on making ice cream cakes...so here is an about.com video which shows the basic process of making an ice cream cake.
If you want to make a gluten free dairy free soy free ice cream cake you can use:
• Purely Decadent Coconut Milk Ice Cream
• Kinnikinnick Oreos
•frosting made with powdered sugar, Spectrum Organic All Vegetable Shortening and coconut milk and skittles
Birthday Cake Sugar Cookies Recipe