The Girl's birthday is today, and she asked for rainbow cupcakes. I've made a full sized cake before, but this is my first try at the cupcakes.
It would have been better if I had more muffin pans. I used my cool tall & skinny ikea muffin pan, but I only had one. And I made 48 cupcakes. A regular muffin pan would have been better, I think. These tall skinny muffins have the propensity to lose their tops.
It's really a method, more than a recipe. I used white cake mix, and used 12 oz. of plain seltzer in it instead of oil, water, and egg. I have a Sodastream soda maker, so seltzer is easy to come by.
Then I divided the cake mix (I used two mixes) into 6 bowls and stirred in gel food colorings to make the colors of the rainbow.
|Red + Orange + Yellow|
|All the colors|
Into cupcake cups, spoon a small amount (about a teaspoon or two, depending on the size of your cups) of each color. Layer the colors on top of each other.
When all the colors are done, draw an "x" in each cupcake with a toothpick, and swirl the top slightly if desired.
Bake according to your cake mix directions (mine was 350, 12 minutes), then cool on wire racks.
Frost as desired and enjoy.