Birthday Cake, or where color theory and baking collide.
This one is less of a recipe, and more of a "how to." My daughter's 8th birthday was this weekend, and in the past she has requested many different kinds of cakes. Hello Kitty, Tinkerbell, and Castles have all been on the list.. but one thing has been consistent. On the "inside" she wants a rainbow.
A rainbow cake is simply a white cake batter that has been divided, dyed, and then strategically layered before baking. Any colors can be used in any order (we're fond of pink, purple and yellow over here lately) and then simply baked as directed. The only real "trick" is to take your time with the layering and not jiggle it too much when transferring it to the oven.