Chocolate Chocolate Mousse Cake

This Chocolate Chocolate Mousse Cake is a rich and moist layer of chocolate cake, that is topped with a creamy and sweet chocolate mousse frosting. It’s a chocolate lover’s dream dessert.

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Are you a huge fan of chocolate cake? If so, then this is the recipe for you. There is just something about the rich chocolate mousse topping that makes this cake out of this world delicious.

Ingredients

This is an overview of the ingredients that you need to make this recipe. You can find the full list of ingredients in the printable recipe card at the bottom of this post.

Bowls of chocolate chips, powdered sugar, heavy cream, water, milk, vanilla, oil, flour, milk, sugar, eggs, baking powder, salt, baking soda, and cocoa powder on a counter.

all-purpose flour
granulated sugar
cocoa powder
baking powder
baking soda
salt
large eggs
milk
vegetable oil
vanilla extract
boiling water
heavy cream
semi-sweet chocolate chips
powdered sugar

Instructions

This is an overview of the steps needed to make this recipe. The full instructions are available in the recipe card.

In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.

batter in stand mixer reayd to be mixed.

Add the eggs, milk, oil, and vanilla extract to the dry ingredients. Mix until smooth. Stir in the boiling water until the batter is well combined.

Pour the batter into the prepared pan and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.

melted chocolate being added to whipped cream in a large measuring cup.

Meanwhile, melt the chocolate chips in a microwave-safe bowl in 30-second intervals, stirring between each until smooth. Let it cool slightly. In a large mixing bowl, whip the chilled heavy cream with powdered sugar and vanilla extract until soft peaks form. Gently fold the melted chocolate into the whipped cream until fully incorporated and smooth.

chocolate mousse being spread on top of a chocolate cake.

Once the cake is completely cool, spread the chocolate mousse evenly over the top of the cake.

chocolate moussee being spread on top of a cake.

Once the cake is completely cool, spread the chocolate mousse evenly over the top of the cake. Chill the cake in the refrigerator for at least 2 hours to set the mousse.

Hint: I recommend that you either grease or flour your cake pan. Or you can use baking spray instead.

Storage

Storage – Store the cake in an airtight container or the fridge for up to three days.

Freezing – You can also recommend freezing these cakes for up to three months. Thaw in the fridge overnight.

Wendy’s Tips

Once you add the wet and dry ingredients together do not overmix your cake batter. You will want to mix it until just combined.
The batter for this cake is very thin. This is to be expected.
It’s very important that your cake is completely cool before you top it with the frosting.

What To Serve With Chocolate Chocolate Mousse Cake

This cake goes well with a tall glass of milk or a cup of your favorite coffee. I like to top it with chocolate sprinkles, chocolate curls or shavings, or even a dollop of whipped cream.

FAQs

Is mousse just whipped pudding?

Mousse is similar to pudding, but it’s lighter and fluffier and not as dense.

How do you stiffen chocolate mousse?

Your mousse should be the perfect texture as long as you beat the whipped cream completely. However, if it’s too thin, you can add a very small amount of cornstarch slurry to the mousse.