Once upon a time, we bought this rainbow cake mix.

It sat around for about a year, until I finally got up the nerve to try it, at my daughter’s behest, for her 8th Birthday. “I want a rainbow cake,” she said. Of course I had to then go out and buy a second box, so the cake would be big enough to cut out a rainbow.

Was waaaaaayyyy easier than I expected. In fact, it would be easy to replicate with any food coloring and white cake mix. First, I mixed up the batter, and then, separated it evenly into 6 bowls.

I let the kids mix in the dyes.

Then, poured the batter into the center of the pans, one color at a time, in rainbow order. Here is a picture I borrowed from another blogger, Jill of All Trades, since I didn’t take a picture. (I used sheet pans).

Dragging a toothpick from the center to the outer edges creates a cool tie-dye look.

Then ready to bake.

Very impressive! We all thought the cakes looked awesome! Then it was time to cut to create a rainbow shape. I’ll admit it wasn’t easy, and under the frosting it wasn’t always pretty…

Frosted the rainbow blue, and the clouds white. Had a little extra for an additional cloud, which was perfect, since we had (3) kids to celebrate.

I liked it plain blue, but it wasn’t MY birthday, so the kids had a turn at decorating. 

Wasn’t perfect like store-bought, but the kids at the party were impressed. I was told several time that it was the best cake they had ever seen/eaten. From an 8-year-old, that is praise, indeed.