Last Updated on February 16, 2023

Find here all the tips and tricks to make the most delicious chocolate rainbow bundt cake ever.

Are you looking for a cake that is easy to make and at the same time makes a big impression? Then we have wonderful news for you, you have come to the right place!

This time we have a super-delicious Chocolate rainbow bundt cake recipe for you. Take a look at this article and find out why you can’t beat this one.

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Chocolate Rainbow Bundt Cake Recipe

Ingredients

For the chocolate cake

4 ounces of dark chocolate (preferably semi-sweet)
3 1/2 ounces of whipping cream
12 ounces of flour
11 ounces of sugar (granulated)
8 ounces of butter
8 ounces of water
2 ounces of cocoa powder
3 eggs
4 ounces of vegetable oil
4 teaspoons of baking powder
2 teaspoons of vanilla
A few drops of different food colors

For the chocolate frosting

12 ounces of dark bittersweet chocolate
1 1/4 cups of heavy cream
1 1/4 cups of sugar
1 1/2 teaspoons of vanilla extract
10 tablespoons salted butter

Pro tip: If for any reason you are forced to use the unsalted one, feel free to add 1/2 teaspoon of kosher salt to 10 tablespoons of butter.

A step-by-step guide to making a chocolate rainbow bundt cake

What would a chocolate rainbow cake recipe be like if we didn’t give you step-by-step instructions? In one word – bad! Follow this guide carefully, and trust us that your efforts will bear fruit on the first try. Well, if you’re in favor, let’s go into the details!

#1: Prepare the utensils & weigh the ingredients

It is extremely important to turn on the oven first so that it has time to reach the required temperature. If for any reason you skip doing this, you will most likely end up with a heavy, undercooked mess in your bundt pan. As an average, the oven usually takes about 20 minutes to heat up to the correct temperature.

Also, be sure to grease the bundt pan thoroughly and then sprinkle it with flour. That way, you should ensure that the cake literally slides out as soon as you flip it.

#2: Make the rainbow batter

In a large clean bowl, put butter, sugar, oil, and vanilla extract and beat with a hand mixer until you get a nice light and fluffy consistency. Depending on the strength of the mixer, but usually we need about 3-4 minutes to get to the desired one.

After that, add eggs and beat again until you get a nice mixture. In the end, add the milk and only then the flour. We recommend not adding all 12 ounces of flour at once, but gradually. It is very important not to overbeat the batter, because it will result in a tough, gummy, or unpleasantly chewy treat, and Chocolate rainbow bundt cake should be anything but that.

After you have made sure that all the added ingredients are evenly combined, all you have to do is divide the mixture into six small bowls, just like the rainbow has 6 colors.

#3: Make the (rainbow) chocolate cake batter

In a separate microwave-safe bowl, mix dark, semi-sweet chocolate and whipped cream. We usually turn the microwave on and off several times and stir the chocolate and cream so that they can be combined as well as possible.

After you have finished, choose a special bowl in which you will slowly add and combine the following ingredients: sugar, eggs, water, oil, cocoa powder, butter, vanilla extract, flour, and finally the baking powder.

It is necessary to be patient and carefully mix the batter, making sure not to overbeat it. It will take a few minutes until you get the nice and fluffy texture that only Chocolate rainbow bundt cake can have.

The last thing you need to do in this step is to add the chocolate mixture to the cake batter and mix evenly. Add a few drops of food coloring to each container (depending on the color intensity you want to achieve). So, one container = one color.

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#4: Assemblage of the masterpiece

The first thing to do if you want to make your life easier is to put each of the colored batters in a piping bag and snip off the top.

As for the assembly itself, it isn’t complicated. Start with the chocolate part of the cake, pour 1/2 of the chocolate batter into the prepared bundt pan, and then, with each color separately, pipe a circle into the moat then using the back of a spoon smooth it out. The most important thing is to make sure that each colored circle is smaller/narrower than the previous one to avoid creating a mess.

Spoon the rest of the chocolate batter on top. Be extra careful not to smoosh the rainbow part now that you’ve already put so much effort into the whole cake. Bake.

#5: Make the chocolate frosting

Put dark bittersweet chocolate in a separate microwave-safe bowl, and melt, stirring occasionally. Then, put the cream, sugar, and vanilla in a bowl and heat it on the stove on medium heat, stirring frequently. Don’t let it boil. At the end, add the chocolate and then the butter and mix slowly until all the ingredients are melted and well combined. Leave it covered in the refrigerator for up to 2 hours.

#6: Final touches

After performing the test with a toothpick and making sure that the cake is baked, allow it to cool for 30 minutes, and then remove the Chocolate rainbow bundt cake from the mold. Pour over your rainbow cake with chocolate frosting and that’s it.

After a few minutes, it is ready to be served to guests.

Wrapping Up

Give this Chocolate rainbow bundt cake a chance, we think you’re going to love this sweet surprise! It isn’t complicated to make, and it is so delicious and juicy. It is the right choice for all kinds of family gatherings.

Soon we plan to write a completely reversed recipe for you, chocolate cake with rainbow frosting. Are you in favor? Tell us more in the comment section below.

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Chocolate Rainbow Bundt Cake: The Super Tasty Dessert In Just 6 Fool-Proof Steps