If I recall, I used five 9 × 13 layers – 2" each. It all depends on how tall or large you want the bag to be. Keep in mind that you will lose cake when you start carving the shape of the bag.
I recommend using a cake that is rather firm so it won’t crumble on you. To provide weight stability, I used a cake board wrapped in parchment paper after the third cake. I also doweled the cake and finally, I put a wooden dowel through the middle once I was finished. I was traveling 60 miles to deliver this cake, so I had to make sure it didn’t shift.
Good luck and post pictures!
DJ - Fun Fiesta Cakes
