Coolest Rainbow Birthday Cake

by Kelsey
(Papillion, Nebraska, United States)

6 different, colourful bowls!

6 different, colourful bowls!

6 different, colourful bowls!
UN-cooked, in pan.
Cooked, still in pan.
What it looked like finished! Yum!

First of all, I will share the needed ingredients-

  • 2 boxes white cake mix
  • 24 oz of clear diet soda (2 cans, ginger ale and sprite work well)
  • gel food colouring
  • 16 oz whipped topping
  • 2 oz instant fat-free sugar-free pudding mix (2 smaller boxes)


Mix the cake mix with the soda according to regular instructions on box. It will be a little lumpy afterward. Again, you can use any white cake recipe you want, this is just how I do it.

The Colouring

Stir colour into each bowl with its own spoon. For the first colour into the pan, measure out 2/3 to 3/4 of your mix (in this case about 1 c) as close to the middle as you can. Drop in your first three colours, then work on the other pan with the last three colours. So if you’re doing rainbow order, the first pan should have red, then orange, then yellow, and now the purple, blue and green go into the second pan. As a recap, this is so both layers are close to the same size.

Bake the cake for however long the box tells you to bake it. Check it when the box says to, but usually it’ll need an extra 5 or 10 minutes or maybe more because of the density of the soda method. Just keep baking, checking back every 5 minutes or so until a toothpick to the center comes out clean. Make sure to let it cool completely before moving to a wire rack.

The Frosting

Make your frosting. Just mix the pudding mix in with the whipped topping for a few minutes. Dye it any color if you’re into that.

Frost your cake with your frosting. (If you are in a hurry, smooth the frosting, if not, try to add some texture!Eat. It will be DELICIOUS and look BEAUTIFUL


This may make a mess, if not cleaned as you go!

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Nov 10, 2015
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by: Anonymous

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Sep 15, 2015
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by: Anonymous

I learned a lot from your post I used the techniques you mentioned on my website and keep writing such things.
Not only brave but also very bold you deal this sensitive and important issue very well I really appreciate you.
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Sep 04, 2015
Nice post NEW
by: david

Coolest rainbow birthday cake is the best i have seen yet,you have posted its recipe,which is fantastic.I will try to make it on my brothers birthday.
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Aug 24, 2015
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