Jacuzzibubbles"Rainbow Cake" ... The perfect recipe ! - Jacuzzibubbles

“Rainbow Cake” … The perfect recipe !



The perfect “Rainbow cake”, kids love it, adults love it as well (if not more) … and each time the same “woww” when the first piece of the cake is cut and served !
This cake is always a little magic, no matter how many times I’ve done it, it’s one of those cakes that never gets boring… it’s always a pleasure (and to be honest a little anxiety) to wait to see if the colors stand out perfectly !

And besides being quite nice to look at … it’s also the one which my friends and family devour the faster! (Make them wait to take a picture is almost a torture !)

I already did this cake several times and corrected the recipe several times as well until I was completely happy with it, and now it’s close to perfect … so I thought it was a bit selfish to keep it to myself !

I hope that this recipe will bring you as much memory it brought us!
Enjoy !




(For the Cake)

  • 350g unsalted butter (at room temperature)
  • 350g white sugar
  • 6 eggs
  • 350g cake flour
  • 3 teaspoons Baking powder
  • A pinch of salt
  • 1 tablespoon vanilla extract
  • 1 tablespoon milk
  • Icing colors gel (Pink, Orange, Yellow, Green et Blue)


Instructions for the cake :

1# Preheat oven to 180°c (350°F)

2# In a bowl, cream the sugar with the butter until it’s white and fluffy.

3# Slowly add the eggs, stir well. Set aside.

4# In an other bowl combine the dry ingredients (flour, baking powder and salt)… Add slowly to the eggs-sugar-butter mixture and stir well until it’s fully combined.

5# Slowly add the vanilla and the milk and stir well.

6# Divide the batter equally in six separate bowls and add the coloring gel.

7# Bake the rainbow layers in separate pans for 15 minutes until a cake tester (or a knife) comes out clean when inserted into the center…Let it cool down and it’s time to make the meringue icing !


DSC_0789-1 Ingredients for the icing:

  • 5 egg whites
  • 210g  sugar
  • 3 teaspoons vanilla sugar

Instructions for the Meringue frosting :

1# Mix egg whites and sugar in a heat-proof bowl over a saucepan of simmering water. Whisk with a hand whisk continuously until the mixture reaches 65°C (149F). Remove from heat.

2# Start whipping the egg whites with a hand mixer until it becomes fluffy and white and the bowl is cool, (about 10 minutes.)


Assembly :

1# Place your first layer (darker blue) on a clean cake plate, spread a thin layer of meringue on top and repeat the same thing between each color. Chill the cake for 20minutes…

2# Place a generous scoop of frosting on top of the cake, spread evenly with a small palette knife and working your way down the sides until you have a thin layer of frosting over the entire cake. Chill for 20 minutes.

3# Remove from refrigerator and cover cake with a final layer of frosting. Then you can add as many Sprinkles as you want !

You’re done !







Feel free to tag me on Instagram, Twitter or Facebook, if you recreate it ! I would love to see your version !

Céleste xx

By Céleste, on March 30, 2016
  1. Le Bloc-Notes de Carmen, March 30, 2016.

    C’est bien la première fois que j’ai envie de manger un rainbow cake !

  2. Dodie la Dodue, March 30, 2016.

    Il est magnifique ! D’habitude je les trouve pas super appétissants, mais là… Bravo :D
    Bises ♥

  3. Léopoldine Cannibale, March 30, 2016.

    Oh mon dieu, mais ton gâteau, c’est le gâteau de mes rêves ! Need pour mon anniversaire **

    xo ♡

  4. Beauty Reveries, March 30, 2016.

    C’est tellement beau que je n’oserai pas le manger aha! Ça me donne vraiment envie d’essayer de le faire, merci d’avoir partagé ta recette :)

  5. Mélina & Chocolat, March 31, 2016.

    En effet il est parfait !! Trop beau !

  6. Katykat, March 31, 2016.

    Trop beau! Et cette décoration toute douce est juste parfaite! Tu me donnes envie de le tenter pour l’anniversaire de mon fils. Où as-tu trouvé ces décorations pour le gâteau?

  7. A Little Daisy, March 31, 2016.

    Miam ! Je n’en ai jamais fais mais c’est un de mes objectifs un jour car le rendu est tellement sympa :)

  8. BoopCook, March 31, 2016.

    il est trooop beau !!!

  9. Mélanie, April 15, 2016.

    Waouh tes photos rendent vraiment bien, ça donne envie! Peut-être qu’un jour je tenterai :)
    Juste entre l’étape 7 et 8, la génoise tu le mets dans quoi/quel type de moule ? J’suis pas une pro de la patisserie!

  10. Kayana, April 21, 2016.

    Jolies couleurs, j’adore!