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    Home » Recipes » Thermomix Recipes » Thermomix Chocolate Cake

    Published: Jul 13, 2021 · Modified: Jan 26, 2023 by Marianne Rogerson · This post may contain affiliate links.

    Thermomix Chocolate Cake

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    This Thermomix Chocolate Cake is rich and fudgy with a to-die-for chocolate buttercream. It is my go-to Thermomix cake recipe for birthday cakes.

    Thermomix Chocolate Cake decorated with kit kats and smarties

    I find this to be a very forgiving cake. It holds up well to layering and icing - whether you stop at the buttercream or cover it with fondant.

    I usually make it as a three-layer cake using 3 x 8-inch round cake tins. However I have also used it for 6-inch cake tins for a tall thin cake, as you can see in the surf cake below. You could also use 2 x 8 or 9-inch cake tins.

    Birthday cake for girls design
    Birthday Cake butterfly
    Birthday cake underwater disign

    Note that this recipe will use a TM5 or TM6 bowl to full capacity. If you have a TM31, you may need to reduce portions.

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    Ingredients

    The best thing about this Thermomix chocolate cake recipe is that it uses basic ingredients from your store cupboard. Nothing fancy to see here, folks! (But just wait til you taste it!)

    You will need:

    • Water
    • Coffee (don't be put off, you won't be able to taste it!) - see below
    • Brown sugar
    • White sugar
    • Butter
    • Cocoa Powder
    • Eggs
    • Plain Flour (can substitute with self raising powder, just skip the baking powder)
    • Baking Powder
    • Bicarbonate of Soda
    • Vanilla Extract
    Slice of Thermomix Chocolate Cake

    Using coffee in Chocolate Cake

    Don't be put off by using coffee in a chocolate cake. You can totally skip it if you want to. HOWEVER, I think you will like the results.

    Using a little coffee in any chocolate recipe does not make it taste of coffee... it makes it taste even more chocolatey!

    Slice of Thermomix Chocolate Cake with a fork

    I have an espresso machine in my kitchen, so it is very easy to quickly make a shot of espresso and add to my recipes.

    If you don't have an espresso machine, you can toss in a teaspoon of instant coffee granules, brew a strong cup of coffee (just make sure if you add a full cup of coffee you reduce the water by the same amount) or use a teaspoon of espresso powder.

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    How to make the cake

    The other great thing is that it is such an EASY recipe. Seriously easy.

    To get started, melt and warm the water, coffee, butter and cocoa powder. Once you have done this, you need to let it cool down before you add in the eggs.

    This will take around 10 minutes. Ideally, you want the temperature to come down to around 50 degrees.

    While you are waiting for it to cool down, you can get your cake tins greased and lined and ready to go.

    I do this by lightly coating the cake tin with softened butter, lightly coating in flour and then lining the base with baking paper. You can read my full method here.

    coating the cake tin with softened butter.
    cutting the baking paper

    Once the butter/cocoa/water mixture has cooled down, mix in the eggs and vanilla. And finally add the dry ingredients to the mixing bowl and and mix together.

    You can now pour the cake batter into the prepared tins and bake for around 30 minutes or until a skewer inserted in the middle of the cake comes away clean.

    Pouring Thermomix chocolate cake batter into cake tins

    You will see from the photo above that the batter is quite runny so you can pour it directly from the Thermomix jug into the cake tins.

    Allow to cool for a few minutes in the tin and then transfer to a cooling rack to cool completely before icing with the buttercream.

    Thermomix Chocolate Buttercream

    This is the best chocolate buttercream. Honestly I think it could turn any old chocolate cake into the best chocolate cake!

    It is rich and creamy and delicious. And so easy to make!

    I suggest using cold butter (straight from the fridge is fine) to get the best consistency for covering the cake.

    The recipe makes enough to cover a 3-layer 9-inch cake with icing between each layer and covering the cake.

    Cake with Thermomix Chocolate Buttercream Icing

    You will need:

    • Icing sugar
    • Butter
    • Cocoa Powder
    • Vanilla Extract
    • Milk

    To make the buttercream, start by blitzing the icing sugar for 10 seconds on speed 9 to make sure it is well sifted, and set aside.

    Next, whip up the butter for 30 seconds on speed 5 before adding in all the remaining ingredients and mixing for a further 30 seconds on speed 5. Done.

    FAQs and Top Tips

    Can I use this recipe for cupcakes?

    You sure can! Pour the batter into lined muffin tins and bake for around 20 minutes. You might want to half the recipe as it makes A LOT of cupcakes!

    How many cake tins do I need?

    I usually make this as a three-layer 8-inch cake, so I use 3 x 8-inch cake tins. I have also used 3 x 6-inch cake tins for a taller cake. You could also divide by two x 8 or 9-inch cake tins.

    Do I have to use coffee?

    No you can easily skip the coffee if you don't want to use it. I think you will find it makes the cake even more chocolatey though 🙂

    Love Chocolate? You will also love these Thermomix recipes:

    • Thermomix Brownies.
      Thermomix Brownies
    • Thermomix Chocolate Zucchini bread
      Thermomix Chocolate Zucchini Bread
    • Peanut Butter Chocolate Brownies Thermomix.
      Peanut Butter Chocolate Brownies Thermomix
    • Thermomix Nutella Brownies
      Thermomix Nutella Brownies

    Did you try this recipe? Please leave me a ⭐ review below!

    Don’t forget to tag me on Instagram @mamalovestocookblog and follow along on Pinterest and Facebook! Enjoy!!! 

    Pin it for Later!

    Thermomix Chocolate Cake pinterest pin
    Thermomix Chocolate Cake

    Thermomix Chocolate Cake

    This Thermomix Chocolate Cake is rich and fudgy with a to-die-for chocolate buttercream. It is the perfect cake for birthday cakes.
    4.67 from 33 votes
    Print Pin Rate
    Course: Cake, Snack
    Cuisine: International
    Prep Time: 20 minutes
    Cook Time: 30 minutes
    Additional Time: 30 minutes
    Total Time: 1 hour 20 minutes
    Servings: 18
    Calories: 521kcal
    Author: Marianne Rogerson

    Ingredients

    For the Cake

    • 500 g water
    • 1 shot espresso* see notes
    • 250 g butter
    • 70 g cocoa powder
    • 4 eggs
    • 1 teaspoon vanilla extract
    • 200 g brown sugar
    • 200 g caster sugar
    • 350 g plain flour
    • 2 teaspoon baking powder
    • 1 teaspoon bicarbonate of soda

    For the Chocolate buttercream

    • 500 g icing sugar
    • 300 g butter cold from fridge
    • 80 g cocoa powder
    • 90 g milk
    • 1 teaspoon vanilla extract

    Instructions

    For the Cake

    • Pre-heat the oven to 150 C / 300 F.
    • Add the water, coffee (if using), butter and cocoa to the bowl and heat/melt for 3 minutes / 80 degrees / speed 2. Remove lid and allow to cool. (This will take around 10 minutes, ideally you want the temperature to drop to 50 degrees or below)
    • Meanwhile, grease and line two or three cake tins (see notes).
    • Once the mixture is cool, add the eggs and vanilla extract. Mix for 5 seconds / speed 4.
    • Add the sugars, flour, baking powder and bicarb soda. Mix for 30 seconds / speed 4.
    • Pour into cake tins (the batter is quite runny so you can pour directly from the TM bowl).
    • Bake in the oven for 30 minutes, or until a skewer inserted into the middle of the cake comes away clean.
    • Allow to cool for a couple of minutes in the tin before carefully turning out onto a wire rack to cool completely.

    For the buttercream icing

    • Add the icing sugar to a clean dry Thermomix bowl. Blitz for 10 seconds / speed 9. Set aside.
    • Chop butter into pieces and add to the bowl. Cream for 30 seconds / speed 5.
    • Add the icing sugar, cocoa powder, milk and vanilla extract. Mix for 30 seconds / speed 5.

    Notes

    1. I usually make this cake using 3 x 8-inch cake tins. I have also used 3 x 6-inch tins for a taller cake. You could also use 2 x 8 or 9-inch tins. Click here to see how to grease and line cake tins.
    2. Using coffee: Coffee is completely optional but will give a more chocolatey flavour. I prefer to use a shot of espresso, however you can substitute with 1 x teaspoon of espresso powder or instant coffee granules. You can also use a cup of strong brewed coffee, but be sure to reduce the water by the same volume of coffee that you use.

    Nutrition

    Calories: 521kcal | Carbohydrates: 70g | Protein: 5g | Fat: 27g | Saturated Fat: 17g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 7g | Trans Fat: 1g | Cholesterol: 103mg | Sodium: 328mg | Potassium: 194mg | Fiber: 4g | Sugar: 50g | Vitamin A: 824IU | Vitamin C: 0.003mg | Calcium: 69mg | Iron: 2mg
    Tried this Recipe? Pin it for Later!Mention @mamalovestocookblog or tag #mamalovestocook!
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    Reader Interactions

    Comments

    1. Fiona Adriazola says

      November 10, 2021 at 6:42 am

      I wanted to check that you mean 50g not 500g of water???

      Reply
      • Marianne Rogerson says

        November 10, 2021 at 7:20 am

        Hi Fiona- no it is definitely 500g! I know it sounds a lot, but trust me, it works! If you look at the other ingredients, the quantities are large too. It makes a large cake perfect for parties. The batter is runny so you can pour it directly into the cake tin from the Thermomix bowl.

        Reply
    2. Bobbie says

      September 20, 2022 at 11:50 am

      Hi,
      How do you find this holds up if making the cake the day before?
      Can you ice the day before or best to leave it to the day of?
      Thanks!

      Reply
      • Marianne Rogerson says

        September 20, 2022 at 10:58 pm

        Absolutely fine. I often make this for birthdays and ice it the day before.

        Reply

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