My great aunt, Carolyn, asked me to make a graduation cake for my cousin, Aaron. I ran into the conflict of trying to find a way to use the graduation hat cake pan, but have enough cake for everyone. I ended up using my 14 inch square and only filling half-full. I think that it turned out to be just the right amount of cake. Carolyn said she had just enough left over to take with her to work. It is a hard hard to find a balance between running out of cake and having cake coming out your ears. It is one of those things that just takes experience and practice.