Flourless chocolate mousse cake with chocolate ganache

A simple 3 ingredient flourless chocolate cake made from just eggs, dark chocolate and butter! An irresistibly rich and fudgy mousse-style dessert cake that everyone will love.

Flourless chocolate mousse cake with chocolate ganache

CHOCOLATE + BUTTER + EGGS

Those 3 basic ingredients are all you need to make this super decadent, rich and mousse-like gluten-free dessert!

Excited? Me too! This is one of my all-time favourite desserts!

Flourless chocolate mousse cake with chocolate ganache

When it comes to the very best chocolate desserts, this AMAZINGLY RICH chocolate cake is right up there with my favourite chocolate mud cake, chocolate cheesecake, chocolate ripple cake and chocolate self-saucing pudding.

Flourless chocolate mousse cake with chocolate ganache

Why You're Going To Love This Recipe

Once you've made this chocolate cake, it's going to become your 'go-to' dessert recipe whenever you're having friends over dinner, need a gluten-free option or you just have a craving for a fudgy, rich chocolate cake.

Here's why you're going to love it so much:

  • it's made from just 3 basic ingredients... there's a good chance you already have them at home!
  • it takes just a few minutes to prepare
  • the method of baking in a water bath in the oven ensures that your cake is super moist and mousse-like... plus it won't crack!
  • it's a great gluten-free option
  • it serves a lot of people (perfect for dinner parties or feeding a crowd) - this flourless chocolate cake is rich, so you only need a small slice!
  • it's foolproof - by baking the cake in a water bath, you're guaranteed a fudgy, rich result! It's almost impossible to 'overcook' this cake!
Flourless chocolate mousse cake with chocolate ganache

It doesn't get any easier than this super easy flourless chocolate cake. All you need is:

  • eggs - use large eggs (approximately 55g)
  • butter - use unsalted butter for this recipe
  • dark chocolate - use a good quality dark cooking chocolate (you can buy cooking chocolate from the baking section of the supermarket). I like Cadbury, Nestle or Lindt brands - but you can use any good quality brand you like. Note: cooking chocolate melts easier than regular chocolate making it a perfect option for this dessert!

That's it... just 3 basic ingredients!!!

Flourless chocolate mousse cake with chocolate ganache

3 Step Recipe

Note: Scroll to the recipe card at the bottom of the post for ingredient quantities and the full detailed method.

Step 1 - Melt The Butter And Dark Chocolate

Use a microwave, Thermomix or stove-top to melt the butter and chocolate together. Do not overcook - heat until just melted and smooth.

Flourless chocolate mousse cake with chocolate ganache

Flourless chocolate mousse cake with chocolate ganache

Step 2 - Beat The Eggs

Use hand-held beaters, a stand-mixer or a Thermomix to beat the eggs until pale, creamy and doubled in size. This will take approximately 5 minutes.

Flourless chocolate mousse cake with chocolate ganache

Flourless chocolate mousse cake with chocolate ganache

Step 3 - Fold The Eggs Through

Use a rubber spatula to gently fold the egg mixture through the melted chocolate (¼ of the egg mixture at a time).

Flourless chocolate mousse cake with chocolate ganache

Flourless chocolate mousse cake with chocolate ganache

Flourless chocolate mousse cake with chocolate ganache

How To Cook A Cake In A Water Bath

A water bath is a method of adding liquid to an oven during baking to ensure a moist cooking environment.

There are 2 different ways of cooking with a water bath in an oven.

  1. Placing a tray of water on the bottom shelf of the oven while your recipe bakes on the shelf above. This method keeps the oven moist resulting in beautifully moist recipes that don't crack.
  2. Placing the dish directly into a tray of water and allowing the heat of the water combined with the moist hot oven to bake the recipe.

In this recipe - we use option 2 as it's the BEST way to get that amazing mousse-like texture in your flourless chocolate cake.

Preparing The Tin

It's important to prepare the tin properly to ensure perfect cooking and easy removal of the cake.

  • Lightly grease the base and sides of a 20cm round springform tin.
  • Cut out a circle of baking paper and line the base of the tin.
  • Wrap foil around the outside edges of the tin (ensuring that the join at the base is well covered - to avoid water seeping in).
  • Place the tin into a large deep baking dish.
  • Once the mixture has been added to the tin, very carefully pour boiling hot water into the large baking dish so that it goes ⅔ of the way up the side of the springform tin (ensure no water gets into the springform tin).

Baking In A Water Bath

  • Very carefully place the large baking dish into the oven.
  • The heat of the moist oven and hot water will slowly cook the cake, while retaining a very moist, rich and mousse-like texture.
  • Once the cake begins to set around the outside edges (the middle should not be set), remove the large baking dish from the oven.
  • When safe to do so, gently remove the springform tin from the baking dish and set aside to cool completely at room temperature (the middle of the cake will continue to cook during this stage).
  • Place the cake (still in the tin) into the fridge overnight before serving.
Flourless chocolate mousse cake with chocolate ganache

Tips For Making This Recipe

Use a good quality dark cooking chocolate - this ensures a beautifully smooth and rich flourless chocolate cake. I recommend Cadbury, Nestle or Lindt brands.

Bake the cake in a water bath - refer to my tips above. This ensures a very rich, moist and mousse-style dessert cake.

Only bake until the edges have set - don't overcook this cake. Simply bake until the outside edges have set (the middle will continue to cook and set once removed from the oven).

Storing - this cake can be stored in the fridge for 1-2 days. Note: the cake will harden slightly in the fridge so allow to come to room temperature before serving.

Freezing - this cake can be frozen in an airtight container for up to 3 months. Allow to defrost in the fridge overnight before serving.

Serving suggestions - Decorate with chocolate ganache, icing sugar, fresh berries, whipped cream or sifted cocoa powder or icing sugar.

Flourless chocolate mousse cake with chocolate ganache

More Gluten-Free Dessert Recipes

If you're after some more delicious gluten-free desserts, then these recipes are guaranteed showstoppers too!

  • Flourless Orange & Almond Cake - the ultimate classic gluten-free cake!
  • Flourless Lemon Cake - perfectly zesty and delicious!
  • Gluten-Free Almond & Coconut Cake - super popular and incredibly yummy!
  • Gluten-Free Lemon, Ricotta & Almond Cake- a moist and rich gluten-free dessert
Flourless chocolate mousse cake with chocolate ganache

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Flourless chocolate mousse cake with chocolate ganache

  • 8 eggs large
  • 225 g unsalted butter
  • 450 g dark cooking chocolate

Conventional Method

  • Preheat the oven to 160 degrees celsius (fan-forced).

  • Grease the base and sides of a 20cm springform tin very well. Line the base with baking paper. Cover the outside of the tin with foil.

  • Place the springform tin into a baking tray that is large enough to fit the cake tin (sitting flat).

  • Place the eggs into a bowl and beat with a stand mixer or beaters on high for at least 5 minutes or until the eggs have doubled in size.

  • Break the chocolate into pieces and place into a microwave safe bowl. Chop the butter into chunks and add to the chocolate.

  • Melt on 50% power in the microwave on 30 second bursts for 2-3 minutes or until the chocolate and butter has melted (stir every 30 seconds with a dry metal spoon). You can use a double-boiler on the stovetop if you prefer.

  • Gently fold ¼ of the egg mixture into the chocolate. Repeat 3 more times with the remaining egg mixture.

  • When the mixture is completely combined, pour it into the prepared springform tin.

  • Boil water and carefully pour it into the large baking tray until it covers ⅔ of the sides of the springform pan.

  • Bake in the oven for approximately 30-35 minutes or until the chocolate cake begins to set on the outside edges (not in the middle).

  • Remove the pan from the oven and set aside until the boiling water has cooled slightly.

  • When it's safe to do so, carefully remove the springform tin from the water bath and set aside to cool completely.

  • Place the cake (still in the tin) into the fridge and leave until it's completely cold. For best results, leave in the fridge overnight. Allow to come to room temperature before serving.

  • Before serving, carefully remove the cake from the springform tin and discard and baking paper.  Decorate with chocolate ganache, icing sugar, fresh berries, whipped cream or sifted cocoa powder or icing sugar.

Thermomix Method

  •  Preheat the oven to 160 degrees celsius (fan-forced).

  • Grease the base and sides of a 20cm springform tin very well. Line the base with baking paper. Cover the outside of the tin with foil.

  • Place the springform tin into a baking tray that is large enough to fit the cake tin (sitting flat).

  • Insert the butterfly into the Thermomix bowl. Add the eggs and beat for 8 minutes on Speed 4, 37 degrees. Pour the eggs into a separate bowl and set aside.

  • Clean and dry the Thermomix bowl. Add the chocolate to the Thermomix and grate on Speed 8 for 10 seconds. Scrape down the sides of the bowl.

  • Add the chopped butter and melt for 5 minutes on Speed 3, 50 degrees.

  • Using a rubber spatula, gently fold ¼ of the egg mixture into the chocolate mixture. Repeat 3 more times with the remaining egg mixture.

  • When the mixture is completely combined, pour it into the prepared springform tin.

  • Boil water and carefully pour it into the large baking tray until it covers ⅔ of the sides of the springform pan.

  • Bake in the oven for approximately 30-35 minutes or until the chocolate cake begins to set on the outside edges (not in the middle). Remove the pan from the oven and set aside until the boiling water has cooled slightly.

  • When it’s safe to do so, carefully remove the springform tin from the water bath and set aside to cool completely.

  • Place the cake (still in the tin) into the fridge and leave until it's completely cold. For best results, leave in the fridge overnight. Allow to come to room temperature before serving.

  • Before serving, carefully remove the cake from the springform tin and discard and baking paper.  Decorate with chocolate ganache, icing sugar, fresh berries, whipped cream or sifted cocoa powder or icing sugar.

RECIPE NOTES & TIPS

Ingredients Info:

  • eggs – use large eggs (approximately 55g)
  • butter – use unsalted butter for this recipe
  • dark chocolate – use a good quality dark cooking chocolate (you can buy cooking chocolate from the baking section of the supermarket). I like Cadbury, Nestle or Lindt brands – but you can use any good quality brand you like. Note: cooking chocolate melts easier than regular chocolate making it a perfect option for this dessert.

More Recipe Tips

Bake the cake in a water bath – refer to my detailed tips in the post above. This ensures a very rich, moist and mousse-style dessert cake.

Only bake until the edges have set – don’t overcook this cake. Simply bake until the outside edges have set (the middle will continue to cook and set once removed from the oven).

Storing – this cake can be stored in the fridge for 1-2 days. Note: the cake will harden slightly in the fridge so allow to come to room temperature before serving.

Freezing – this cake can be frozen in an airtight container for up to 3 months. Allow to defrost in the fridge overnight before serving.

Serving suggestions – Decorate with chocolate ganache, icing sugar, fresh berries, whipped cream or sifted cocoa powder or icing sugar.

Calories: 300kcal | Carbohydrates: 13g | Protein: 5g | Fat: 25g | Saturated Fat: 15g | Cholesterol: 113mg | Sodium: 38mg | Potassium: 235mg | Fiber: 3g | Sugar: 7g | Vitamin A: 481IU | Calcium: 36mg | Iron: 4mg

How do you make flourless chocolate cake?

Instructions.
Preheat the oven to 375°F. ... .
To make the cake: Put the chocolate and butter in a microwave-safe bowl, and heat until the butter is melted and the chips are soft. ... .
Stir in the sugar, salt, espresso powder, and vanilla. ... .
Add the eggs, beating briefly until smooth. ... .
Spoon the batter into the prepared pan..

What does flourless chocolate cake taste like?

What does flourless chocolate cake taste like? Unlike regular cakes made of flour, flourless chocolate cake is not fluffy nor light. It tastes like a rich chocolate truffle. It's silky, rich, and smooth.

How do you thicken mousse?

Try adding a tiny amount of cornstarch to some water, and add to the mousse bit by bit and see how that helps thicken the texture. Alternatively, whisk some egg yolks in a separate bowl over low heat until they increase in volume and fold that slowly into the mousse mixture.

Do you need to refrigerate chocolate mousse cake?

How to Store Chocolate Mousse Cake Recipe. This Chocolate Mousse Cake must be stored in the fridge. You can store the cake in the springform pan with plastic wrap on top until ready to serve or store it directly on a serving plate, covered. Chocolate Mousse Cake will last up to 4 days.