UPDATE: D has come home from school and the cupcakes were a big hit! I was a little worried since I had not tried them before I sent them in. I'm not much of a cake eater. She did bring a couple home. I had sent in a few extra just in case of dropping/accidents and what not...I tried a bite and it seriously tasted like rootbeer float! One student said to my daughter "I hope we are in the same class in second grade. If we are will you bring these in again?" so I guess that means he liked them! LOL
UPDATE 2: We tried it with chocolate cake mix and they were equally delicious!