Take a standard white cake mix batter and divide it up into bowls (for as many colors as you have).
Squirt in the coloring and let the kiddos mix it up. Gel colors will give you a more vibrant solid color than food coloring liquid.
I used a bundt pan, but any pan works fine. Just layer globs of batter in any pattern.
Bake as directed...
Frost and decorate as desired...
And when you cut into the cake, you get a different colorful rainbow in each slice. How cool is that?Moist White Cake
1 (18.25 ounce) package white cake mix
1 (5.9 ounce) package instant vanilla pudding mix
1 cup sour cream
1 cup vegetable oil
1/2 cup warm water
Preheat oven to 350 degrees F (175 degrees C).
In a large bowl, mix together the cake and pudding mixes, sour cream, oil, beaten eggs and water. Pour batter into a well greased 12 cup bundt pan.
Bake for 50 to 55 minutes, or until top is springy to the touch and a wooden toothpick inserted comes out clean. Cool cake thoroughly in pan at least an hour and a half before inverting onto a plate If desired, dust the cake with powdered sugar.