In case you don't want to click over: buy two boxes of white cake mix. Divide the batter up evenly and using the gel icing colors (not food coloring) color the batter. What makes this even easier is using the disposable aluminum pans to bake your cakes in. Bake the cakes, level them with a knife, and layer with frosting, and frost the outside. Basic buttercream frosting is softened butter, powdered sugar, vanilla and milk. If you have lots of jars lying around, it's also fun to bake cake in a jar.
If you make a rainbow cake or cupcakes, snap a picture and send it in. Happy Wednesday!
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