This naturally colored polka dot cake is made from scratch with only natural flavorings and homemade natural food colorings. You don’t even need a cake pop pan to make a polka dot cake – I’ll show you how to make polka dots without a cake pop maker with leftover stale cake!

The surprise polka dots inside the cake are naturally colored in all colors of the rainbow with blueberries, blackberries, strawberries, butterfly pea flower tea, kale and sunflower seeds!

-> Naturally Colored Rainbow Ice Cream Cake

Some of the polka dots are cake pops made with cake crumbs and butter and some are marzipan balls. Both polka dots are delicious but the marzipan balls are even more luscious and decadent! This naturally colored polka dot with German buttercream frosting cake takes some time to make but the end result is totally worth it!

-> Naturally Colored Rainbow Cake

Naturally Colored Polka Dot Cake Without A Cake Pop Maker

Ingredients:

Naturally Colored Polka Dots Without A Cake Pop Maker

Naturally Pale Pink Polka Dots – For 3 Polka Dots

• 2 tsp pureed strawberries
• 4 tbsp light colored cake crumbs (such as white cake or sponge cake)
• 1/2 tbsp butter

Naturally Pale Pink Polka Dots – For 2 Polka Dots

• 1/2 tsp pureed strawberries
• 1 tbsp marzipan

Naturally Dark Pink/ Maroon Polka Dots – For 3 Polka Dots

• 1/2 tsp pureed blackberries
• 2 tbsp marzipan

Naturally Dark Pink/ Maroon Polka Dots – For 4 Polka Dots

• 1 1/2 tsp pureed blackberries
• 4 tbsp light colored cake crumbs
• 1/2 tbsp butter

Naturally Purple Polka Dots – For 4 Polka Dots

• 1/2 tsp pureed blueberries or blueberry jam
• 2 tbsp marzipan

Naturally Purple Polka Dots – For 3 Polka Dots

• 1 tsp pureed blueberries
• 4 tbsp light colored cake crumbs
• 1/2 tbsp butter

Naturally Light Blue Polka Dots – For 4 Polka Dots

• 1/4 tsp butterfly pea powder
• 2 tbsp marzipan

Naturally Dark Blue Polka Dots – For 2 Polka Dots

• 1/4 tsp butterfly pea powder
• 2 tbsp light colored cake crumbs
• 3/4 tbsp butter

Naturally Green Polka Dots – For 4 Polka Dots

• 4 tbsp naturally green kale cake crumbs
• 1 1/2 tbsp butter

Naturally Dark Green Polka Dots – For 4 Polka Dots

• 1 tbsp homemade, naturally green sunflower seeds frosting
• 4 tbsp light colored cake crumbs

Naturally Dark Green Polka Dots – For 4 Polka Dots

• 4 tbsp naturally green sunflower seed cake crumbs
• 1 1/2 tbsp butter

Vanilla Sponge Cake

• 9 eggs
• 200g (1 cup) sugar
• 5 tbsp homemade vanilla sugar
• 300g (2 1/2 cups) flour

German Buttercream

• 2 cups (soy) milk (500ml)
• 1/2 cup sugar (100g)
• 3 tbsp homemade vanilla sugar (35g)
• 6 tbsp cornstarch (55g)
• 2 1/5 sticks butter, softened (250g)

Naturally Blue Icing

• 1 bag butterfly pea flower tea (1 1/2g)
• 2 tbsp boiling water
• 3/4 cup powdered sugar

Directions:

Naturally Colored Polka Dots Without A Polka Dot Maker

Knead together the ingredients for each polka dot color. Then roll the naturally colored polka dots into balls between your hands.

Vanilla Sponge Cake

Preheat the oven to 160°C/ 325°F. Line a springform pan with baking paper.

Separate the eggs and beat the egg whites with an electric mixer until stiff.

In a separate bowl, beat the egg yolks, sugar and vanilla sugar until thick and creamy. Fold in the egg whites and the flour.

Pour one third of the sponge cake batter into the springform pan and add one third of the naturally colored cake pops.

Bake the naturally colored polka dot cake layer for 20 minutes. Then make the other two sponge cake layers.

German Buttercream

Whisk together cornstarch and 1/2 cup soy milk. Bring the remaining soy milk, sugar and vanilla sugar to a simmer. Pour the cornstarch mixture into the boiling milk while constantly stirring. Continue to cook the pudding until it thickens (about a minute or so). Remove the pudding from heat and let it cool to room temperature.

Now beat the butter with an electric mixer until smooth and creamy. Add the pudding, one tablespoon at a time. Mix until it’s well incorporated but don’t overmix the German buttercream.

Spread the buttercream onto each sponge cake layer and stack the layers on top of each other. Then cover the naturally colored polka dot cake with buttercream. Put the naturally colored polka dot cake into fridge to set and cool.

Related: 7 Types Of Buttercream + Recipes

Naturally Blue Icing

Pour the boiling water over the butterfly pea flower tea and let the naturally blue tea steep for 15 minutes. Remove the bag and stir the powdered sugar into the dark blue tea.

Using a spoon, let the naturally blue icing drizzle down the sides of the naturally colored polka dot cake.

More Naturally Colored Cakes & Desserts On My Blog:

-> Blue Cake Naturally Colored With Red Cabbage

-> Patriotic Strawberries With Homemade Natural Blue Food Coloring