I only used one 8"round cake pan and then put the rest of the batter in mini loaf pans. No muffin pan at the moment, otherwise I would have done cupcakes. I was on a time crunch and screech...made a box cake. I did however make homemade chocolate buttercream icing, which everyone thought was delicious. I thought some individual mustaches on the mini loaves would be cute. I added a little too much cream to the chocolate chips, but they didn't turn out too bad. I meant to leave some buttercream plain, because I thought the chocolate would show up much better on white icing, but I forgot. O well. Next time.
Since I'm a bit anal, I used a template to cut out the mustache, so it would be even. Thank god I did, because my first template was lopsided. I traced the cake pan, then folded the circle in half and in half again so the mustache would be even. Although maybe I should have centered it on the tray. My son didn't seem to care and no one but me noticed.