Rainbow Cake recipe – without artificial coloring

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In this Rainbow Cake, fluffy and moist cake bases meet delicate and airy mascarpone cream frosting. It tastes heavenly delicious and is a sweet highlight at any party with its colorful layers. You can find a detailed Rainbow Cake recipe with the exact quantities and step-by-step instructions below.

Rainbow Cake recipe

Coloring batter for Rainbow Cake

The bases in my Rainbow Cake are colored with fruit powders and vegetable powders. They may not look brightly colored, but they still look colorful. This Rainbow Cake doesn’t need any artificial coloring, so children can eat it without hesitation.

Raspberry powder, orange powder, blackcurrant powder and blueberry powder, for example, are suitable for the cake in terms of color.

With vegetable powders, you need to make sure that they don’t have a strong taste so that you can’t taste them in the cake. Spinach powder and beet powder, for example, are perfect for coloring cake bases.

You can also get certain colors by mixing some basic colors together. Blue and yellow become green. Yellow and red make orange. You get purple from blue and red.

As natural colors are not as intense as artificial ones, you always need to use a little more. I added about 3 teaspoons of fruit powder or vegetable powder to each portion of batter.

By the way, you can also dye Easter eggs naturally.

If you want to use artificial food coloring for the Rainbow Cake, I can recommend the gel colors from Wilton, which I always use myself. For example, I used them to decorate the sponge slices with buttercream, the sponge meringue cake “Vetka” and the Soviet sponge cake with buttercream.

How to make Rainbow Cake

More ideas for cake frosting

I made the Rainbow Cake with the light and airy frosting made from mascarpone and cream. However, other fillings are also suitable.

For example, you can make the Rainbow Cake with a cream cheese buttercream frosting, which I used to fill my chocolate whoopie pies. It tastes just as delicious with a buttercream frosting, such as for the cake “Podarochnyi” or the cake “Abrikotin”.

Selecting the baking tin

I baked the cake bases for my Rainbow Cake in a baking springform tin with a diameter of 20 cm. This made them quite thick and the cake correspondingly high.

If you prefer to make thinner bases, use a springform tin with a slightly larger diameter. A Ø 22 cm or Ø 24 cm baking tin is suitable for this, for example, just like for the lemon cake. Note that the thinner your cake bases are, the shorter the baking time.

Incidentally, if you have several suitable springform tins of the same size at home, you can bake two or three cake bases at the same time, just like for the Red Velvet Cake. That way, you’ll finish baking faster.

Colorful layer pastry

Ideal for birthday party

The Rainbow Cake is especially popular with children. But adults love it too, just like the anthill cake.

The Rainbow Cake is perfect for a party. Serve it at a kids’ birthday party, for example, just like the cat cake, the turtle cake or the hedgehog cake.

This Rainbow Cake is

  • fluffy,
  • moist,
  • creamy,
  • soft,
  • tender,
  • light,
  • moderately sweet,
  • heavenly delicious,
  • colorful,
  • without artificial coloring,
  • a great eye-catcher on the coffee table,
  • ideal for a party, especially a kids’ birthday party.

Pastry for kids' birthday party

How to make Rainbow Cake: tips and tricks

  • Instead of fruit and vegetable powder, you can use ordinary food coloring.
  • Cornstarch makes the cake bases fluffier and softer. Alternatively, you can replace it with the same amount of flour.
  • Do not mix the batter for the cake bases for too long, but only until it has a homogeneous consistency. Otherwise they could taste tough.
  • Do not bake the cake bases longer than necessary so that they taste moist. Do a stick test to check whether they are done.
  • If you have several Ø 20 cm springform tins, you can also bake two or three cake bases at the same time.
  • Use a Ø 22 cm or Ø 24 cm springform tin for thinner cake bases. Please note that the baking time will be shorter in this case.
  • You can adjust the amount of powdered sugar for the cake frosting to taste.
  • You can find out which other frostings make the Rainbow Cake taste delicious in the article above.
  • You can decorate the Rainbow Cake however you like. Colorful sugar pearls and sugar sprinkles go well with it.

Did you make the Rainbow Cake using this recipe? I look forward to your result, your star rating and your comment below on how it turned out and how it tasted.

Try out these other cake recipes:

Rainbow Cake recipe

Rainbow Cake

In this Rainbow Cake, fluffy and moist cake bases meet delicate and airy mascarpone cream frosting. It tastes heavenly delicious and is a sweet highlight at any party with its colorful layers. You can make the Rainbow Cake at home with the recipe.
Prep Time 2 hours
Cook Time 15 minutes
Cooling time 4 hours
Course Dessert
Servings 12

Equipment

  • Ø 20 cm baking springform tin

Ingredients
  

for the batter

  • 300 ml milk room warm
  • 240 g butter room warm
  • 6 eggs room warm
  • 200 g sugar
  • 380 g flour
  • 100 g cornstarch
  • 15 g baking powder
  • zest of 1 organic lemon
  • 1/5 tsp ground vanilla bean
  • 1 pinch of salt
  • fruit powders and vegetable powders (tasteless) (purple, blue, green, yellow, orange, red)

for the frosting

  • 500 g mascarpone cold
  • 500 g cream cold
  • 50 g powdered sugar
  • 1 pinch of ground vanilla bean

to decorate (optional)

  • sugar pearls

Instructions
 

Preparation of the batter

  • Line the springform tin completely with baking paper.
  • Beat softened butter, sugar, lemon zest, vanilla and salt for approx. 5 minutes until light and creamy.
  • Add eggs one at a time and beat each egg briefly to form a homogeneous mixture.
  • Pour in milk and mix briefly.
  • Mix flour with cornstarch and baking powder.
  • Add the flour mixture to the butter-egg-milk mixture and mix briefly but thoroughly to form a homogeneous, airy, thick batter.
  • Divide the batter into 6 equal portions into 6 clean bowls.
  • Color the batter portions in purple, blue, green, yellow, orange and red. To do this, add about 3 teaspoons of fruit powder or tasteless vegetable powder to each portion of batter.
  • First place one of the batter portions in the springform tin, smooth it out and bake the cake base in a preheated oven at 338 °F (170 °C) for approx. 15 minutes. Then carefully remove the cake base from the springform tin together with the baking paper. Line the springform tin with clean baking paper again and bake the next cake bases one after the other in the same way.
  • Leave all 6 cake bases to cool and remove the baking paper.

Preparation of the frosting

  • Briefly whip mascarpone, cream, powdered sugar and vanilla to a firm frosting.

Preparation of the Rainbow Cake

  • Leave a few tablespoons of frosting for the sides of the cake and divide the remaining cream in equal portions between the 6 cake bases. Stack the cake bases on top of each other – first the purple, then blue, green, yellow, orange and red cake bases, smoothing the frosting on each cake base. Cover the sides of the cake with the remaining frosting.
  • Decorate the Rainbow Cake with sugar pearls as desired and chill for at least 4 hours.

Notes

  • Instead of fruit and vegetable powder, you can use ordinary food coloring.
  • Cornstarch makes the cake bases fluffier and softer. Alternatively, you can replace it with the same amount of flour.
  • Do not mix the batter for the cake bases for too long, but only until it has a homogeneous consistency. Otherwise they could taste tough.
  • Do not bake the cake bases longer than necessary so that they taste moist. Do a stick test to check whether they are done.
  • If you have several Ø 20 cm springform tins, you can also bake two or three cake bases at the same time.
  • Use a Ø 22 cm or Ø 24 cm springform tin for thinner cake bases. Please note that the baking time will be shorter in this case.
  • You can adjust the amount of powdered sugar for the cake frosting to taste.
  • You can find out which other frostings make the Rainbow Cake taste delicious in the article above.
  • Take note of the detailed tips and tricks for making the Rainbow Cake at the top of the article.

If you are using Pinterest, you can pin the following picture:

Pin Rainbow Cake

 

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