How to Make Easy Amazing Rainbow Cake Step By Step

I baked this specially for my son’s birthday. Everyone seems to like rainbow a lot, especially the kids, for the fact that it is so colorful, beautiful and very appetizing just by looking at it. So it’s a good choice for a kid’s birthday cake. It may seem a lot of work to make one, but if you have enough equipment (mixing bowls and baking pans), it will lessen your hassle for doing the washing on and off.

By right, you will need 6 mixing bowls and 6 baking pans. I do have 6 pans but I only got 2 mixing bowls, so I need to do some washing so that I can rotate the bowls for other colors.

Here is a video tutorial which can give you a clearer picture.

Cake Ingredients

  • 650g butter
  • 500g granulated sugar
  • 8 large eggs
  • 650g self raising flour* (sifted)
  • 2 tsp vanilla essence
  • 12 tbsp milk (2 tbsp for each color)
  • 6 rainbow colorings: red, orange, yellow, green, blue (or aqua), purple

*note: you may replace with all-purpose flour, and add 2 tsp of baking soda, 2 tsp of baking powder, and 1 tsp of salt

You will need

  • 6 small bowls
  • 6 small mixing bowls
  • 6 baking pans
  • cake mixer
  • spatulas
  • parchment papers
  • weighing scale
  • cake spinner

Note: It’s totally ok, if you do not have so many bowls and pans. Just do it a color at a time. Of course, it will lengthen your baking process.

Buttercream Ingredients

  • 400g softened unsalted butter or shortening
  • 800g icing sugar (sifted)
  • 5 tbsp whole milk
  • ½ tsp vanilla extract

Note: sorry I didn’t put the making of buttercream in the video as I do not want to make the video too long, you might fall asleep. So for the buttercream, beat the butter in medium speed until it is soft, creamy and white. Then add in the sifted icing sugar little by little until you achieve a creamy consistent for your cake decorating. If the buttercream is too liquid, add more sugar. If it is too dry, add in the whole milk little by little. I live in a hot country, so I don’t even need the whole milk most of the time.

Thank you for watching. I shall come up with more cake recipes and videos in the near future, so please subscribe my channel and stay tune for more videos.