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Triple Nutella Mousse Cake

This triple Nutella mousse cake features a rich Nutella brownie base topped with a layer of luscious Nutella mousse filling and a layer of soft Nutella ganache.

Triple Nutella mousse cake with strawberries on a cake stand.

Over the years I've created some pretty amazing desserts and today's recipe is no exception. The cake you see here is the love child of my Nutella cheesecake, strawberry mousse cake, and triple chocolate mousse cake.

Valentine's Day is just a few weeks away and I knew we needed to celebrate with something special. This TRIPLE Nutella mousse cake is just that.

It sounds like it would be overly sweet but trust me, it's not.

The base is my Nutella brownie recipe. You guys love that one! I used a little less sugar so the brownie isn't quite as sweet but still just as decadent and amazing.

The brownie base is topped with a lush mousse made with Nutella, cream, and gelatin. I also added a pinch of salt to help balance the sweetness.

The cake is then topped with a super soft Nutella ganache. It's soft even after being refrigerated!

You are going to really like this one, I promise! Check out the triple Nutella mousse cake web story!!

Slice of triple Nutella mousse cake on a white plate with a strawberry and whipped cream

How to make triple Nutella mousse cake?

Begin by making the brownie layer. Line the bottom of a 9-inch springform pan with foil so the cake is easy to lift off the base of the pan. You could also use parchment paper but I worry about batter leaking from the bottom seal.

Spray the foil and sides of the pan with non-stick spray and press a strip of parchment paper around the inner ring. The nonstick spray will help the parchment paper stay in place.

Prepare the brownie batter then spread it evenly into the bottom of the pan and bake it for 25-30 minutes. Times may vary depending on your oven. Test the brownie with a toothpick and remove it once you get just a few moist crumbs attached to the toothpick.

Cool the brownie completely by letting sit at room temperature for an hour or refrigerate it for about 20 minutes.

Nutella mousse being spread over a Nutella brownie in a round pan

Once the brownie base is completely cool, you can make the mousse layer and spread it over the brownie layer. Refrigerate the mousse layered brownie for at least 2 hours.

After the mousse layer has set, make the ganache topping and spread it evenly over the top. Return the cake to the refrigerator and chill for about 1 hour to allow the ganache to set.

Nutella ganach being poured over triple Nutella mousse cake

Remove the sides of the pan and carefully pull the parchment paper off the sides of the cake. Transfer the cake to a serving platter and enjoy!


Do I have to use gelatin for Nutella mousse?

For the cake to hold its shape, you must use the gelatin. It keeps the mousse layer sturdy and prevents it from "melting" off of the brownie layer.

Can I make Nutella mousse cake with boxed brownies?

You certainly can! Just prepare the batter as directed and bake it in a 9-inch springform pan.

Triple Nutella mousse cake on a cake plate with a slice being taken out.

Tips for making Nutella mousse cake

  • When you make the mousse filling you'll need to let the warm Nutella and gelatin cool before adding the whipped cream. During the cooling process, it is VERY important that you stir the Nutella mixture frequently. If you fail to do this you may end up with tiny little gelatin balls throughout the mousse.
  • You can underbake the brownie base slightly if you want a fudgy texture!
  • When you go to serve the cake, slice it while it's cold then let the slices come to room temperature for the best texture.
Slice of triple Nutella mousse cake on a white plate with a fork taking out a bite.

More Nutella recipes you'll love

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Triple Nutella mousse cake on a cake plate with a slice being taken out.

Triple Nutella Mousse Cake

Yield: one 9-inch cake
Prep Time: 35 minutes
Cook Time: 40 minutes
Additional Time: 6 hours 20 minutes
Total Time: 7 hours 35 minutes

This triple Nutella mousse cake features a rich Nutella brownie base topped with a layer of luscious Nutella mousse filling and a layer of soft Nutella ganache. 

Ingredients

For the brownie base

  • 8 ounces (226 g) Nutella
  • ½ cup (113 g) unsalted butter, cut into pieces
  • ¾ cup (150 g) granulated sugar
  • 3 large eggs, room temperature
  • 1 tablespoon pure vanilla extract
  • 1 cup (130 g) all-purpose flour
  • 3 tablespoons Dutch-process cocoa powder
  • ½ teaspoon salt

For the mousse layer

  • 2 ¼ teaspoons plain gelatin powder, 1 packet
  • 4 tablespoons cold water
  • 8 ounces (226 g) Nutella
  • 1 ½ cups (360 ml) heavy cream, divided
  • ⅛ teaspoons salt

For the topping

  • 1 cup (300 g) Nutella
  • ½ cup (120 ml) heavy cream

Instructions

Make the base

  1. Preheat the oven to 350ºF. Line the bottom a 9-inch springform pan with aluminum foil and spray the foil lightly with nonstick spray. Line the sides of the pan with parchment paper.
  2. Add the Nutella and butter to a medium saucepan. Warm over medium-low heat, stirring constantly until Nutella is melty and smooth. Whisk in the sugar. Set aside to cool slightly.
  3. Once cooled, whisk in the eggs and vanilla until combined. Sift the flour, cocoa powder, and salt into the Nutella mixture and fold together with a rubber spatula just until combined. 
  4. Spread the batter evenly into the bottom of the prepared pan. Bake for 25 to 30 minutes, or until a toothpick inserted into the center comes out with only a few moist crumbs. Leave the brownie in the pan and set it wire rack to cool completely. Or pop it in the refrigerator for 15-20 minutes.

Make the mousse

  1. In a small bowl, sprinkle the gelatin over water, let stand for 5 minutes.
  2. Bring the Nutella and ½ cup of the cream to a simmer in a small saucepan over medium-high heat, whisking until the Nutella has fully melted. Remove from heat.
  3. Add the salt and softened gelatin; whisk until gelatin is fully dissolved. Transfer to a large bowl and cool to room temperature, stirring occasionally. The mixture will thicken slightly.
  4. In the bowl of a stand mixer fitted with the whisk attachment, whip the remaining 1 cup cream at medium speed until it begins to thicken, about 30 seconds. Increase the speed to high and whip until soft peaks form, about 30 to 60 seconds.
  5. Use a whisk to mix in ⅓ of the whipped cream into the Nutella mixture. Use a rubber spatula to fold in the remaining whipped cream until no streaks appear.
  6. Spoon the mousse into the pan over the brownie layer. Smooth the top with an offset spatula. Place the cake in the refrigerator and chill until set, about 2 hours.

Make the topping

  1. Warm the Nutella and cream in a small saucepan over medium-low heat, whisking until the Nutella has fully melted. Set aside to cool for 10 minutes, stir it occasionally.
  2. Pour the glaze over the top of the mousse layer and use an offset spatula to smooth it over. Refrigerate for at least 1 hour or until the glaze has set.
  3. Carefully remove the sides of the pan and dispose of the parchment paper. Serve the cake with whipped cream or fresh berries.

Notes

  • When you make the mousse filling you’ll need to let the warm Nutella and gelatin cool before adding the whipped cream. During the cooling process, it is VERY important that you stir the Nutella mixture frequently. If you fail to do this you may end up with tiny little gelatin balls throughout the mousse.
  • You can underbake the brownie base slightly if you want a fudgy texture!
  • When you go to serve the cake, slice it while it’s cold then let the slices come to room temperature for the best texture.

It's important to let the ganache cool before topping the mousse with it. If you pour warm ganache over the cold mousse, you'll get condensation which will seep from the crack where they meet. 

Make ahead tip

  1. The cake will keep for up to 3 days stored in the refrigerator.
  2. The cake can be frozen for up to 3 months. Thaw in the refrigerator overnight before serving.

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Nutrition Information:
Yield: 10 Serving Size: 1 slice
Amount Per Serving: Calories: 748Total Fat: 48gSaturated Fat: 37gTrans Fat: 1gUnsaturated Fat: 9gCholesterol: 134mgSodium: 196mgCarbohydrates: 69gFiber: 4gSugar: 53gProtein: 9g

* Percent Daily Values are based on a 2000 calorie diet. Since different brands of ingredients have different nutritional information, the values shown are just an estimate.

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Jen

Tuesday 18th of May 2021

Hi! I am starting to make the mousse layer right now, and it says to mix in the sugar. I don’t see an amount of sugar for the mousse layer. Thank you

Jen Sobjack

Wednesday 19th of May 2021

There is no sugar in the mousse layer, only in the base (brownie) layer. I've read through the instructions and only see sugar mentioned for the base so I'm not sure where you are looking to see it listed in the mousse layer.

Helene

Friday 29th of January 2021

This was the most decadent chocolate dessert I’ve had in a long time. Fairly simple too for such a delicious dessert. I cooked it in muffin cups to control portions and took out as needed. The mousse will be my go to recipe as it set up perfectly with the gelatin. Thanks for sharing!

Louise

Wednesday 23rd of September 2020

Hi there, I am keen to make this or the triple chocolate mousse cake - but would prefer to make the mousse with eggs rather than gelatin. Is that possible and can I just use any chocolate mousse recipe?

Jen Sobjack

Thursday 24th of September 2020

You're welcome to use any mousse recipe you wish. But I can't say how it will work with my cake.

Hina nafe

Tuesday 11th of August 2020

I dont havw a 9 inch pan...can i make this in 8 inch? Or would that be a bit too much batter?

Jen Sobjack

Wednesday 12th of August 2020

An 8-inch pan is going to hold less so there is a chance it may not fit. I've not tried to make the cake in an 8-inch pan so I can't say for sure.

Annie

Tuesday 16th of April 2019

How much of this can I make ahead? I was going to make the brownies on Thursday, the mousse on Friday, and the ganache on Saturday and put together Saturday afternoon/evening. Can the mousse be made a day ahead???

Thanks!!!

Annie

Tuesday 16th of April 2019

I think I found the answer, but is it better if I don't put it together until last minute? Or put together the night before and keep in fridge? Thanks again!

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