I was looking for a cupcake recipe that you could use a mix with (so it tasted a little more homemade). I found one on Tidy Mom - I used a yellow cake mix. And we used this recipe from Lauren's Latest for the frosting. Super easy and yummy. Here you go:
Perfect Cupcakes (using a mix)
http://tidymom.net/2007/the-perfect-cupcake-using-a-mix/
Chocolate Frosting
http://www.laurenslatest.com/the-best-and-easiest-chocolate-frosting-birthday-cake/