Chocolate Frosted Rainbow Cake

A couple of months ago my 4yo daughter came across "Nerdy Nummies" on YouTube, a series of videos made by a young girl named, Rosanna Pansino.  As Rosanna describes it, the videos are "geeky cooking shows" which are basically simply made themed cakes or cupcakes. 

Trini was totally hooked and every couple of days she asked me to find the "girl who makes the rainbow cake" so she can watch her videos.  I looked over her shoulder one day and watched Rosanna make a rainbow coloured cake that just looked so cool, I promised to make it for Trini's birthday in September.

Recently I celebrated my birthday with a party at home and figured why wait till September and chose to make the cake for my birthday.  Trini could hardly wait to help with the mixing and dyeing of the cake layers.

How fun is this.  I feel like a kid all over again.

Making this cake is super super easy.  Just needs time since 6 separate cakes need to be baked.

Instructions:

3 Betty Crocker Super Moist White Cake Mix boxes
9 egg whites (3 per box)
1 cup oil (1/3 cup per box)
3.75 cups water (1.25 cup per box)
2 Betty Crocker chocolate frosting tubs
Food dyes in purple, blue, green, yellow, orange and red (we used pink instead of yellow simply cause my daughter asked me to)
2 x 20cm round non-stick cake pan

Method:

Pre-heat oven to 160 celsius.

Take the first cake mix box and follow instructions to mix batter.  Split the batter in half and add purple to one batter and blue to the other.  Add enough dye until you are satisfied with the intensity of the colour.  Pour each batter into the lightly greased cake pans and bake in oven for 20 minutes each (or 30 minutes for both at the same time) or until cakes are baked through.  Repeat the process with the rest of the boxes and food dyes.

The 6 colours.

You may note that the green one split in half because I handled it before it was completely cooled and unfortunately I didn't have a cooling rack.  The pink also got a little messy because I forgot to grease the pan.  Either way it didn't hinder us from continuing with the cake production.

Straighten the top of each cake by slicing off the bumpy section.  This way as the cakes get stacked they are unlikely to topple over.

Spread each cake with chocolate frosting and stack in rainbow colour order starting with purple at the bottom.  This uses up one tub of frosting.  Then frost the outside of the layered cake with the second frosting tub.  I got hubby to do the frosting cause he is so much more patient than I am and it was a good decision, since he did a wonderful job.

Layered with frosting.

Not a bad job by hubby.  Certainly more patient than I am.

And that's it.  Cut the first slice nice and big just so you can experience the wonderful rainbow colour before the rest of the cake gets sliced and chomped up.  We had very little left by the next day but we sure enjoyed it over and over again.

Trini is looking forward to her rainbow cake in September but I am told that she will choose the colours next time.  No worries sweet-pea, you can make it whatever colour you want.

Happy me, with my first slice cut out.
I was surrounded by under 6 yo when it was time
to blow out the candles.