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Triple Chocolate Mousse Cake Recipe

November 12, 2013 by Jenn

If you are a chocolate lover (like me) you are going to DIE for this recipe.  When I took this cake to the staff room at school, one of my coworkers said it was the best cake she had ever had.  I brought three of these cakes in, and they were gone in a day.  That’s gotta be a record somehow!  Each layer of the mousse has a unique flavour.  The bottom is a light, flourless chocolate cake with a hint of espresso.  The espresso brings out the richness of the chocolate, so make sure that you don’t leave it out.  The middle is melt in your mouth delicious.

This cake is time consuming, so make sure you have lots of time for each layer to set and/or cool as needed.  You want it to be completely set before you cut it, or you won’t have the layers set enough for them to stay standing up.  It’s definitely worth the effort, so don’t let the time turn you off.

Triple Chocolate Mousse Cake Recipe Ingredients:
 
Bottom Layer
  • 7oz bittersweet chocolate (I used chips)
  • 3oz butter (6 tbsp)
  • 3/4 teaspoon espresso powder
  • pinch of salt
  • 4 eggs, separated
  • 1/3 cup brown sugar (60g)
Middle Layer

  • 2 tablespoons cocoa powder
  • 5 tablespoons hot water (75mL)
  • 7oz bittersweet chocolate (I used chips)
  • 1 1/2 cups cold heavy cream (whipping cream) (350mL)
  • 1 tbsp granulated sugar (7g)
  • 1/4 tsp salt
Top Layer
  • 3/4 teaspoon unflavoured gelatin
  • 1 tablespoon water (15mL)
  • 6 oz white chocolate (I used chips)
  • 1 1/2 cups cold heavy cream (whipping cream) (350mL)
 
chocolate mousse cake
 
Procedure:
 
Bottom Layer
Combine chocolate, espresso powder and butter in a heat proof bowl.  Melt in the microwave for 60 second intervals on 50% power.  Mix until combined and melted.  Allow to cool for 5 minutes.  Separate eggs into two different bowls.  Into the yolks, add the vanilla and whisk until combined.  Add yolk mixture to chocolate mixture and stir to combine.  Into a stand mixer fitted with the whisk attachment, combine the egg whites and salt and whisk until frothy (about 30s).  Add half of the brown sugar and whisk for about 30s.  Add the remaining brown sugar and continue to whisk until soft peaks form.  Take 1/3 of the egg white mixture and add it to to the chocolate mixture.  Whisk until combined.  Add the remaining amount of egg white mixture and fold with a spatula until no white streaks remain.  Place into greased 9″x 3″ springform pan and bake at 325F for 30-40 minutes. Set aside to cool completely.
 
Middle layer 
Mix the cocoa and water together and set aside.   Melt the chocolate in a heatproof bowl and stir until smooth.
Whip the cream, sugar and salt together until soft peaks form.  Mix the cocoa powder mixture into the melted chocolate until smooth.  Add one third of the whipped cream into the chocolate and stir until lightened.  Add the remaining amount of whipped cream and fold with a spatula until no white streaks remain.  Spoon mixture onto the cooled bottom layer and place into refrigerator until set (about 30 minutes).
 
Top Layer
Mix the gelatin and water in a small bowl and set aside for 5 minutes.  Bring 1/2 cup of cream to a boil and pour over top of white chocolate.  Add gelatin and mix until chocolate is smooth.  Whip cream in stand mixer until soft peaks have formed.  Add one third of the whipped cream into the chocolate and stir until lightened.  Add the remaining amount of whipped cream and fold with a spatula until no white streaks remain.  Spoon mixture onto the cooled bottom layer and place into refrigerator until set (about 2-3 hours).  Garnish as desired.  Slice with a hot knife and serve immediately.
 
triple chocolate mousse cake
 
I hope you enjoy this chocolate delight!  Happy Baking!
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Filed Under: Cakes, Tutorials, Videos Tagged With: cake, chocolate, chocolate cake, Chocolate Mousse, Mousse, mousse cake, triple chocolate, triple chocolate mousse cake

Comments

  1. Aliben says
    October 11, 2016 at 9:47 am

    Hey, new fan from Ethiopia here. I made your cake this past weekend. It took me a while to gather all the ingredients, and my top layer was runnier than yours but the cake turned out great and everybody loved it! Thank you for the receipe!

  2. Narelle says
    August 2, 2016 at 5:16 am

    Hi Jen,

    I had the same problem with the white chocolate mousse, when you add the whipped cream to the chocolate it seems to curdle and split. Could you please shed so light on why this is happening?

    Thanks Narelle

    • Jenn says
      August 20, 2016 at 8:31 am

      I haven’t had that problem so I’m not sure why that happened for you.

  3. Cakelover says
    May 1, 2016 at 11:15 pm

    Hey je! Your chin ale is amazing! I was wondering if I could leave the gelatine out for the top layer…

    • Jenn says
      May 18, 2016 at 5:07 am

      The top layer won’t set without the gelatin.

  4. syla says
    November 24, 2015 at 8:59 pm

    hi jen, im doing the cake today its tuesday nov. 23 and im doing it today coz i have to work tomorrow and i dont have time to do it, u think its gonna be good until thursday? i want to take it to my inlaws for thanks giving

    • Jenn says
      November 25, 2015 at 7:03 am

      This will last 2-3 days so I hope it’s still good for you!

  5. Alica says
    July 19, 2015 at 4:44 pm

    Hey jenn..I prepared the cake and the top layer has this weird texture so to fix that I was wondering if I can put white chocolate ganache on top of it to smooth it out? Please reply I don’t have much time.

    • Jenn says
      July 21, 2015 at 4:00 am

      Since I don’t quite know what the problem is, I’m sure you can smooth it out with white ganache if you think that will be best. Good luck!

  6. Alica says
    July 17, 2015 at 2:35 pm

    Hey Jenn.. I was wonderwondering if can add gelatin in the middle layer too.. Just to make it more stable.. Also can I add vanilla extract in the cake layer?

    • Jenn says
      July 17, 2015 at 7:44 pm

      You can do both if you prefer, though you don’t need the additional gelatin. Have fun!

  7. Alma says
    July 4, 2015 at 1:56 pm

    can I use something as a substitution for the espresso powder?

  8. Zainab says
    July 4, 2015 at 6:09 am

    Hey Jen I was wondering wether the cocoa powder in the middle layer is the type of cocoa powder used in chocolate milk or is it the regular version that is usually used in cake?

    • Jenn says
      July 8, 2015 at 5:52 am

      The baking kind 🙂

      • Zainab says
        July 8, 2015 at 9:03 am

        Thank you jenn this cake is going to be my moms and mine birthday cake. :). I was also wondering if you were going to make devils food cake on your channle?

        • Jenn says
          July 9, 2015 at 3:32 pm

          I already have…it’s a halloween video, but the recipe is there.

          • Zainab says
            July 9, 2015 at 6:21 pm

            Oh okay thank you I will look for it then 🙂

  9. Camille says
    December 26, 2014 at 1:03 am

    Hi, I wanna try this recipe for the new years eve, what brand of whipping cream did you used? Thank you.

    • Jenn says
      December 28, 2014 at 7:52 pm

      I buy whatever is on sale…and whatever my grocery store sells. There isn’t a lot of selection where I live.

  10. Jay says
    December 20, 2014 at 5:56 pm

    Is it okay to bake it a day ahead of time before serving it?

    • Jenn says
      December 20, 2014 at 8:27 pm

      Yes, just be sure to keep it in the fridge.

      • Lily says
        December 21, 2014 at 4:54 am

        Jenn- What about more than 1 day? Can I make it 2-3 days ahead of time?
        Thanks!

        • Jenn says
          December 22, 2014 at 7:28 am

          It only lasts for 2-3 days, so I don’t recommend that.

  11. Tuyet My says
    November 28, 2014 at 12:24 am

    Hi
    I’m a chocolate lover and I really love your blog and your channel on Youtube. You have a lot of amazing recipe. Will you think to come up a recipe for the Blackforest Cake? I found some of the video recipe on the internet but the way they used to explain the recipe was not straight forward.

    • Jenn says
      November 29, 2014 at 4:15 pm

      I’ve got that cake on my list, so I’ll try and bump it up for you! Thanks for watching!

  12. Raquelle says
    July 24, 2014 at 10:52 pm

    Do you just use expresso beans ground into expresso or are you using flavored expresso drink?

    • Jenn says
      July 25, 2014 at 1:57 am

      I used an instant powdered espresso for this recipe.

  13. Yingki says
    July 24, 2014 at 3:35 pm

    Could I use double cream instead of whipping cream? Are they the same?

    • Jenn says
      July 25, 2014 at 6:02 am

      Whipping cream has a milk fat percent of around 35%…so if the double cream is similar to that, I’m sure you could. Good luck.

  14. ROWENA says
    June 16, 2014 at 9:19 pm

    iade this cake for father´s day. and my hubby loved it, not only him but also my daughter plus me! Thank you for sharing your recipe!

    • Jenn says
      June 17, 2014 at 5:30 am

      I’m so happy to hear that!! Thanks for including me in your husband’s special day!

  15. Kim says
    June 2, 2014 at 9:53 am

    Hi Jenn!
    I made the cake and I really really really loved it!!! So i want to make it again 😉
    But I’ve got a question: you need to mix the melted chocolate (for the two chocolate mousses) with some other ingredients. Does the chocolate have to be completely cooled before you mix it or is it no problem when it is still a bit hot?
    You have some great recipes, I love them!
    Thanks

    • Jenn says
      June 4, 2014 at 4:23 am

      I’m so glad you liked the mousse cake…I love it too! It would depend on what you were mixing in…nuts etc would be fine, but if you’re adding other chocolate pieces then allow the mousse to cool slightly.

  16. Marajana says
    March 16, 2014 at 7:47 pm

    is oz the same as ounce? who much is that in gram?

    • Jenn says
      March 17, 2014 at 12:56 am

      The abbreviation of ounce is oz. You can convert things here: http://cookiescupcakesandcardio.com/?page_id=3348

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