
By Alina Fernandes
Perfect Chocolate Mousse Cake7
21 steps
Prep:30minCook:25min
This Chocolate Mousse Cake is insanely good! It's has 3 layers of soft & pillowy chocolate cake, with a creamy chocolate mousse layered in between, and topped with a rich chocolate ganache.
Updated at: Tue, 11 Feb 2025 18:46:41 GMT
Nutrition balance score
Unbalanced
Glycemic Index
61
Moderate
Glycemic Load
85
High
Nutrition per serving
Calories1215.1 kcal (61%)
Total Fat69.6 g (99%)
Carbs139.1 g (53%)
Sugars104.3 g (116%)
Protein18.7 g (37%)
Sodium393.6 mg (20%)
Fiber6.5 g (23%)
% Daily Values based on a 2,000 calorie diet
Ingredients
6 servings
For the Cake:

3eggs

1 ½ cupsSugar White

¾ cupmilk

¾ tspVinegar White

¾ cupoil

1 tspvanilla essence

salt

½ cupcocoa powder

1 ½ cupsflour

1 ½ tspbaking powder

½ tspbaking soda
For the mousse:

350mlWhipping Cream

1 TbspSugar White

⅓ cupmilk

1 Tbspgelatin powder

385 gramTin Condensed Milk

6 Tbspcocoa powder
For the ganache:
Instructions
Method for the cake:
Step 1

Grease three 23cm x 23cm cake pans with butter, and line them with baking paper. Cut one long piece of baking paper per pan (that extends up two sides of the pan) as this makes getting the cakes out the tins a lot easier once they're baked. The cakes are quite thin, and can break if not removed correctly. If you're unsure of how to do this, you can watch the recipe video above. *Alternatively, you can bake this in one 23cm x 23cm cake tin and slice it into 3 layers if you prefer – refer to notes below!
Step 2
Preheat your oven to 160° C or 320° F.
Step 3
In a large mixing bowl, beat the eggs with an electric mixer until they become fluffy (roughly 45 seconds).
Step 4

Add the sugar and beat until well combined (roughly 45 seconds). The mixture will become slightly paler in color.
Step 5
Add the vanilla essence, salt, oil and milk & vinegar to the mixture, and beat until combined (about 30 seconds).
Step 6

Sift in the flour and cocoa, and beat until there aren't any lumps.
Step 7
Add the baking powder and baking soda (bicarb) and fold into the batter.
Step 8

Divide the batter evenly between the three cake tins (roughly 320g in each) and bake on the middle shelf for 25 minutes. * If you're baking this in one tin, bake for 35-40 minutes.
Step 9
Leave the cakes to cool for about 20 to 30 minutes, then remove them from the pans by giving a gentle tug on the baking paper, and slowly lifting it while sliding your hand under it to support the cake.
Method for the mousse:
Step 10

While the cakes are cooling, you can make the chocolate mousse. Place the cream and sugar in a mixing bowl and beat until stiff. Then set aside.
Step 11

In a separate bowl, heat the milk in the microwave for 45 seconds and then add the gelatin powder to it. Stir it for a minute or two, until all the gelatin has melted and it's lump free. If there are any lumps, you can heat it for a couple more seconds in the microwave, and continue stirring until it's smooth.
Step 12

Add the gelatin mixture, condensed milk, and cocoa powder into the whipped cream, and beat it with an electric mixer until it's and even color. The mixture will become quite runny, but it stiffens up perfectly after chilling!
Step 13

Place the mousse in the freezer for 5-10 minutes to allow it to thicken. When it's the consistency of icing, it's ready for filling between the cakes!
Method for assembly:
Step 14

Place the mousse in a piping bag with a big round piping tip (roughly 1cm). Fill the bag with half the mousse, and pipe lines over the top of one of the cake layers. Smooth it off using a scraper, creating a perfectly level layer of mousse.
Step 15
Then place the next cake layer on top, and repeat the mousse layer.
Step 16

Lastly, add the third layer of cake on top, and place it in the fridge to continue setting for a few minutes.
Method for the ganache:
Step 17
While the cake is setting, you can make the chocolate ganache. Place the cream into a microwave safe dish, and heat for 1 minute.
Step 18

Break the chocolate slabs into blocks and add them to the heated cream, stirring until they've completely melted.
Step 19

Place the ganache in the fridge for about five minute to cool and slightly thicken, and then pour it over the top of the cake. Watch the recipe video for tips on how to get the perfect ganache topping!
Step 20

Then slice the ends off the cake, creating a perfectly neat sides!
Step 21

Decorate the cake with anything you like. I've used a combination of meringues, fudge, chocolate and Whispers, and rolled them in gold dust to give a beautiful shine. Enjoy!
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