Chocolate Mousse Cake

Chocolate Mousse Cake

Light, airy, chocolatey and absolutely delicious. And you know what?! It’s actually not hard to make. The cake layer comes together in under 5 minutes, bakes under 12 minutes. And the mousse is truly easy to put together as well.

The hardest part about all of this, is chilling the cake for 4 hours, then a bit longer after you spread the luscious ganache over it. So hard to let it sit there whilst all you want to do is dig into that light and airy perfection!

I would have to say, out of all my recipes, there might be 3 they are straight up adapted. It’s not something I do often. I love designing each and every single recipe from scratch. However, this cake is so perfect as is, that I saw no reason to mess with the good thing. This recipe is adapted from Ricardo Cuisine with changes.

I considered doing some elaborate decorations with this cake, but then realized that keeping it simple is best for today’s purpose. One, it’s easier to transport. And two, you see just how attainable it is to make – so easy and looks perfect even without any fancy garnish. A strawberry, cocoa dusting and a bit of whipped cream is all you really need. But go all out if you want and garnish any way you like it!

Hope you guys give it a try as I’m sure it will be a huge hit with anyone you make this for!

How about this tray for your next potluck?

Let’s get cooking!

Yields10 Servings

For the cake:
 ½ cup flour
 ¼ cup sugar
 2 tbsp cocoa
 ¼ tsp baking soda
  cup strong coffee, still warm
 2 tbsp oil (neutral, such as vegetable or canola)
 1 tsp lemon juice
 pinch of kosher salt
For the mousse:
 7 oz dark or semi sweet chocolate, chopped (not chocolate chips)
 1 tsp gelatin
 2 tbsp coffee, still warm
 2 egg yolks
 sugar: 1/2 cup if used dark chocolate or 7 TBSP if used semi-sweet chocolate (that's 1/2 cup less 1 TBSP)
 2 tsp vanilla
 pinch of kosher salt
 2 cups heavy cream, divided
Ganache:
 3 oz dark or semi-sweet chocolate, chopped (ideally dark)
  cup heavy cream
 small pinch of kosher salt

For the cake:
1

Preheat oven to 350°F.

Butter 8" springform pan and line the bottom and the sides with parchment. To do the sides, cut a long strip of parchment about 2.5 " wide and line directly against the diameter of the pan, it will stick to the pan due to the butter.

2

Combine dry ingredients for the cake. Then stir in coffee, oil and lemon juice with a whisk until well-blended. Spread evenly into your prepared pan.

Bake for 10-12 minutes until toothpick comes out clean with just a few moist crumbs. Remove from the oven and allow to cool down completely.

For the mousse:
3

Bring a medium pot of water to a simmer. Place chocolate and a pinch of salt in a heat-proof bowl and set over a pot of simmering water, ensuring the bottom doesn't touch the water. Allow to sit undisturbed for a minute. Then stir with a heat resistant spatula until melted. Remove from heat.

4

Sprinkle gelatin over warm coffee and let bloom for 5 minutes.

Place egg yolks in a small bowl and whisk gently.

5

Heat 1/4 cup of cream and sugar in a small pot over medium-low heat, stirring constantly. Pour a bit of this warm mixture into the egg yolk bowl whisking immediately to avoid scrambling the eggs. (If you whisk immediately and constantly, gradually rising their temperature, they won't scramble.) Return this back to the cream/sugar pot and keep cooking over medium low heat. You want the sugar to be melted and the internal temperature come to 170°, so that eggs are fully cooked.

Remove from heat and add gelatin. Stir until gelatin is completely dissolved. Add this mixture to chocolate, along with vanilla, and stir to combine.

The chocolate mixture must be completely cool before adding whipped cream. So take a few minutes to clean the kitchen while this mixture cools.

6

Whip the remaining 1 3/4 heavy cream until stiff peaks (stiff, but don't overbeat either turning it into butter.) The best way to whip cream is on low to medium low speed with your stand mixer. It will take a bit longer but it will be much ore stable than if you were to whip it on high speed.

Add 1/3 of whipped cream to completely cool chocolate mixture and stir to lighten it. Then fold in the rest of the whipped cream with a rubber spatula gently and carefully, without knocking the air out of your whipped cream and keeping it light and airy.

Pour this mousse on top of your cake into the springform pan. Smooth out the top.

Refrigerate for 4 hours (or overnight.)

The picture below shows how the sides of your pan are lined with parchment.

For the ganache:
7

Heat cream over medium-low heat until hot and bubbles just form on the edges. Pour over chopped chocolate and allow to sit undisturbed for a minute. Add a pinch of salt, then stir into smooth ganache. Pour this over your chilled cake spreading it with an offset spatula and encouraging some of the chocolate to drip down the sides. Refrigerate for an hour for the ganache to set.

To serve:
8

Slice the cake while it's cold with a sharp knife that you held under hot water, then wiped with a clean towel between each slice - for nice smooth cuts. Allow slices to sit at room temperature for 5-10 minutes before serving.

Ingredients

For the cake:
 ½ cup flour
 ¼ cup sugar
 2 tbsp cocoa
 ¼ tsp baking soda
  cup strong coffee, still warm
 2 tbsp oil (neutral, such as vegetable or canola)
 1 tsp lemon juice
 pinch of kosher salt
For the mousse:
 7 oz dark or semi sweet chocolate, chopped (not chocolate chips)
 1 tsp gelatin
 2 tbsp coffee, still warm
 2 egg yolks
 sugar: 1/2 cup if used dark chocolate or 7 TBSP if used semi-sweet chocolate (that's 1/2 cup less 1 TBSP)
 2 tsp vanilla
 pinch of kosher salt
 2 cups heavy cream, divided
Ganache:
 3 oz dark or semi-sweet chocolate, chopped (ideally dark)
  cup heavy cream
 small pinch of kosher salt

Directions

For the cake:
1

Preheat oven to 350°F.

Butter 8" springform pan and line the bottom and the sides with parchment. To do the sides, cut a long strip of parchment about 2.5 " wide and line directly against the diameter of the pan, it will stick to the pan due to the butter.

2

Combine dry ingredients for the cake. Then stir in coffee, oil and lemon juice with a whisk until well-blended. Spread evenly into your prepared pan.

Bake for 10-12 minutes until toothpick comes out clean with just a few moist crumbs. Remove from the oven and allow to cool down completely.

For the mousse:
3

Bring a medium pot of water to a simmer. Place chocolate and a pinch of salt in a heat-proof bowl and set over a pot of simmering water, ensuring the bottom doesn't touch the water. Allow to sit undisturbed for a minute. Then stir with a heat resistant spatula until melted. Remove from heat.

4

Sprinkle gelatin over warm coffee and let bloom for 5 minutes.

Place egg yolks in a small bowl and whisk gently.

5

Heat 1/4 cup of cream and sugar in a small pot over medium-low heat, stirring constantly. Pour a bit of this warm mixture into the egg yolk bowl whisking immediately to avoid scrambling the eggs. (If you whisk immediately and constantly, gradually rising their temperature, they won't scramble.) Return this back to the cream/sugar pot and keep cooking over medium low heat. You want the sugar to be melted and the internal temperature come to 170°, so that eggs are fully cooked.

Remove from heat and add gelatin. Stir until gelatin is completely dissolved. Add this mixture to chocolate, along with vanilla, and stir to combine.

The chocolate mixture must be completely cool before adding whipped cream. So take a few minutes to clean the kitchen while this mixture cools.

6

Whip the remaining 1 3/4 heavy cream until stiff peaks (stiff, but don't overbeat either turning it into butter.) The best way to whip cream is on low to medium low speed with your stand mixer. It will take a bit longer but it will be much ore stable than if you were to whip it on high speed.

Add 1/3 of whipped cream to completely cool chocolate mixture and stir to lighten it. Then fold in the rest of the whipped cream with a rubber spatula gently and carefully, without knocking the air out of your whipped cream and keeping it light and airy.

Pour this mousse on top of your cake into the springform pan. Smooth out the top.

Refrigerate for 4 hours (or overnight.)

The picture below shows how the sides of your pan are lined with parchment.

For the ganache:
7

Heat cream over medium-low heat until hot and bubbles just form on the edges. Pour over chopped chocolate and allow to sit undisturbed for a minute. Add a pinch of salt, then stir into smooth ganache. Pour this over your chilled cake spreading it with an offset spatula and encouraging some of the chocolate to drip down the sides. Refrigerate for an hour for the ganache to set.

To serve:
8

Slice the cake while it's cold with a sharp knife that you held under hot water, then wiped with a clean towel between each slice - for nice smooth cuts. Allow slices to sit at room temperature for 5-10 minutes before serving.

Chocolate Mousse Cake

I could not stop taking pictures of this gorgeous cake. So here they all are. By the way, not a single adjustment or filter on any of these photos, as with all my photos. What you see is what you get!

The ganache looks a bit hard out of the fridge, but since you will let it come to room temp for a few minutes, it will soften into shiny ganache as in the picture below by the time you serve it
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