I saw this pin on Pinterest (where else do I see things?) and thought that would be fun for Rhyanne's birthday cake/cupcakes! (Yes, I'm delinquent in writing this blog post...)
So, what you do is make white cake mix, fill your cupcakes or cake tin, and use a toothpick to swirl:
I learned that when you bake them, the color all goes to the middle, and down. So you end up with a lot of color in the center only. Also, I need to put more batter in the cupcake papers, and make sure they bake fully... Rhyanne *always* fills the cupcake papers nearly full and it makes for really nice big rounded-tops on her cupcakes. She only gets about a dozen from a box mix, but they're yummy!