How to make the Best Ever Rainbow Cake
To make a rainbow cake, you need plenty of bowls and plenty of room.
We will start with 9 tbsp whole milk and 1 ½ tsp vanilla extract and mix them together.
Now we need to devide that mixer into 6 equal parts in 6 different bowls. Let’s add coloring to each bowl. This is how you get the rainbow colors. We will use variety of color pastes such as red, orange, yellow, green, blue & purple. We are basically trying to recreate the colors of a rainbow in our rainbow cake. Mix the colors in all 6 bowls.
Next, let’s mix our batter. We need to use a mixer and mix 750g soft unsalted butter and 750g caster sugar. Mix for 6 or 7 minutes.
Let’s add in eggs. We need 9 eggs for the recipe. Slowly add the eggs in 5 or 6 stages, so it blends well with our butter and sugar.
Add 750g sifted self-raising flour and put it on a low setting.
Divide this up to 6 parts. You can use a kitchen scale to do it. Mix all 6 bowls with the colored milk from earlier.
Let’s put the 6 mixes into 6 sandwich tins. You can reuse them if you don’t have six. You can base them with a little butter and flour so they don’t stick.
Bake them for 20 minutes at 170 degrees Celsius.
You can now make your butter cream while that bakes.
For the buttercream – 400g soft unsalted butter 900g sifted icing sugar 5-6 tbs whole milk ½ tsp vanilla extract.
Now you have all you need for your cake. All you have to do left is to decorate it. You’ll have to cut each layer to size and stack them on top of each other in rainbow colors. You’ll add your buttercream between each layer as you stack them.
After you stack them, cover the entire cake with buttercream and put it on the fridge for half hour to set it.
Do another thick later of butter cream and you’ll all set. Cut into it and enjoy.
Video by CupcakeJemma