Rainbow Surprise Cake

Cake:
Vanilla cake mix
Stuff required on box
Betty Crocker gel food coloring

Icing:
Rainbow Chip store-bought
White home-made or store-bought vanilla frosting





Mix up batter, and distribute into 6 liquid measuring cups (preferably) or bowls. Or you can use 5 of the above and use the mixing bowl for your 6th container. First mix the orange and purple colors, and then the red so that you don't run out of red trying to make the red batter red and don't have enough for the other two that require red dye. The yellow, green, and blue are a piece of cake- no pun intended.

Using either 2 round cake pans or 1 9x13" cake pan, follow the instructions for greasing on the cake mix box, and then add 3/4 of the red batter to one (side, if using the 9x13) and 3/4 of the purple batter to the other (side). For the first 3 colors add more batter to the pan out of each bowl, and for the last 3 colors add less of the batter, i.e., the rest in the bowl. This should form concentric circles in the order of the rainbow forward and backward. Bake according to package instructions.
















When the cake is ready to frost, stack the two cakes (if using 9x13, cut in half) using the Rainbow chip frosting between. Frost the outside white so those not in the know get a surprise when cutting into the cake.

Note: This is fun to do for holidays, etc., with color themes. See picture:
















Credit: http://omnomicon.blogspot.com/2009/01/how-to-make-rainbow-cake.html