Buttercream cake used a 14 in square pan on the bottom then used elmo face pan for top layer. Surronded with different cupcakes of cookie monster and oscar that I found from a fellow CC member thank you!!! I also used buttercream to decorate and marshmellows for the eyes and oreo cookies for the mouth. My son loved it and as you can see the kids already got to it before I had a chance to take a picture