Ann Reardon

Rainbow Cake


Here’s a super easy rainbow cake that is bright and fun for a rainbow themed party.

To make this rainbow cake you will need:

Serves: 8

Three quantities of the basic buttercream recipe
Three 20cm (7.87 inches) round cakes of your choice.
To make three of the sponge cakes make one and a half times this perfect sponge cake recipe.
1/2 cup of filling if desired (I used this lemon curd with the addition of 1 tablespoon of flour whisked into the lemon juice).  You do not have to use a filling you can just put buttercream between the layers.
Liquid food colour in blue, green, yellow and red.
Make your buttercream and then divide two thirds of the buttercream into 5 bowls and colour blue, green, yellow, red and orange (combine a tiny amount of red with yellow).
Place the buttercream into ziplock bags and pipe as shown in the video above

rainbow cake recipe ann reardon

[yasr_visitor_votes size=”large”]  
Easy Rainbow Cake
Copyright © 2018 Reardon Media Pty Ltd. All rights reserved. How To Cook That


I have been busy over the last year planning, writing and overseeing the photography and layout for my first ever cookbook! There are heaps of my favourite dessert recipes in there with a chapter on pastries, ice-cream, yummy cakes, artistic desserts and of course chocolate desserts. Each chapter has its own intro explaining the food science that you'll need to know for success every time. Booksellers where you can purchase your very own copy:

All recipe quantities in the book are in grams, ounces and cups.

26 Comments View Comments

  1. Rating: 5

    I had only one cake mold so it took a while to bake the three cake bases.
    Besides that, it was quite an easy recipe.

    My son really enjoyed his birthday cake.

    It’s not perfect, but for a first try I am really proud of my work.

    Thank you Ann ❤️❤️❤️

  2. 3rattlesnake

  3. Rating: 5

    Hi Ann!!! I love cooking and baking ❤️ I tried to make your rainbow cake using your chocolate cake recipe And it’s amazing!

    • Awesome Salwa, looks great ??

  4. I just finished making this for my daughter’s 4th Birthday! She is all about rainbows and unicorns and this looked perfect! Loved having the video demonstration for help. I can’t wait to see the look on her face! Excited to look through your other recipes for my son’s 1 year birthday next month. Glad I found your site! Thanks!

    • Wow Cecily, this looks amazing. You did a fabulous job on the frosting!

  5. i am 12 yrs old and i live in america and i just love every thing about your channel i love the cakes since i love baking i especialy love your accent thank you for being awesome keep it up

    • Thanks Ari Scott. Ann is delighted to hear that you are enjoying her channel.

  6. Ahh this cake is amazing! Can this cake be made smaller?

    • hi fantastic16 yes you can definitely make it smaller

  7. I combined your rainbow cake with the icing of this cake to make my brother the rainbow cake he had been requesting all year. Thanks for the recipes, your site is a huge help!

  8. Recently I started watching your videos n I’m inspired by them, I made this cake twice n evry1 loved it, thanx 4 sharing your ideas 🙂

    • Beautiful yaleris

  9. Hi Ann,
    I just wanted to send you a photo of my 16 year old son’s version of your Rainbow Cake. I was amazed by his effort and impressed at how delicious the cake tasted.
    You have added a whole new dimension to our lives!!!
    Kind regards
    Sandra Mason

    • That is awesome, he has done such a good job of decorating, and baking by the sound of it too 😀

  10. Dear Ann, this cake is planned to be my son’s birthday cake. I will use this recipe, but I want make the sponge cake inside as a rainbow cake as well, with five layers of the colors of the frostings. My question, is this sponge recipe suitable for making 5 cake layers and bake them separately (I have a small oven), will the dough last until the last part baking? Thx, Katalin

  11. Just wondering if this could be made into a Chocolate Version?

  12. Like your website. Apart from the little book of frosting is there a subscription fee to join?

    Thank you.

    • Hi Judy, It is free to subscribe you can do so on email, rss or any of the other buttons under follow me on… all for free 😀

      • ann this cake was very nice but all cakes are best!!!!!!!!!!!! love u and don’t make me disappoint all the best!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! <3 😀

        • 😀

  13. again amazing job ann. I still don’t no how u do it so perfectly
    Madison rappa

    • thanks madison

  14. gracias por tan deliciosas resetas

    • gracias

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