soap?

I got these really cool cupcake paper cups, but I can’t make cupcakes b/c I will eat every one I make in one day and then eat all the left over batter that did not make into a cup cake. I wonder if I could make home made glycerin soap and use them as molds? How cool would that be? Little cupcake soaps?

http://www.eaudrey.com/glycerin.htm