Triple Chocolate Mousse Cake

Triple chocolate mousse cake – the one and only dessert for a true chocolate lover. Perfect showstopper for a special occasion.

triple mousse 6 Triple Chocolate Mousse Cake

Welcome to day twelve of our Valentine’s Day Celebration event! Do you see that slice up there? This, ladies and gentlemen, is the ultimate chocolate dessert. Not only it’s triple chocolate but it is made of layers of mousse. Creamy mousse, that melts in your mouth and transfers you into a sweet bliss. I had this cake on my to-make list for so long and it finally happened!

triple mousse 1 Triple Chocolate Mousse Cake

It is also the most labor intense dessert I have ever made. It can take up to 2 days to make it, only if you decide though. You can make it all in one day if you start early in the morning. But it’s crucial to let every layer set before adding the next one. It is important to read the instructions before proceeding. You need to plan well when making this cake. You need to be patient and gentle. Lots of love goes into making this cake. And that’s also why it’s so rewarding in the end.

triple mousse 2 Triple Chocolate Mousse Cake

The look is breath-taking itself. I know because when I presented this cake to my Hubby, he had a reaction he only has to impressive looking desserts. Then came the “oooh’s” and “ahhh’s” and I knew it tastes as incredible as it looks. icon smile Triple Chocolate Mousse Cake

You may think it’s utterly rich. Well, it is in texture but because of it’s made of chocolate mousse – it’s airy and light. And that makes it incredibly easy to eat. Which most likely will make you reach for another slice. icon smile Triple Chocolate Mousse Cake Not that I know anything about that… Ahem…. icon smile Triple Chocolate Mousse Cake

mousse cake 8 Triple Chocolate Mousse Cake

triple mousse 5 Triple Chocolate Mousse Cake

This is my favorite special occasion dessert. Perfect for a wedding anniversary (ours is quickly approaching – another excuse to make it :)) or Valentine’s Day. Or anytime you decide you need it.

And trust me. If you are a chocolate lover, you need to try this cake. It is time consuming to make it but there is a huge satisfaction awaiting you in the end.

The best chocolate dessert.

triple mousse 3 Triple Chocolate Mousse Cake

Triple Chocolate Mousse Cake

Prep Time: 6 hours

Cook Time: 18 minutes

Total Time: 36 hours, 18 minutes

Yield: 1 9" round cake, serves 12 to 16

triple mousse 2 Triple Chocolate Mousse Cake

The most impressive and decadent of all chocolate cakes. Light and airy in texture and not-overly sweet in taste. Pure sweet bliss!


  1. 1st layer:
  2. 6 Tbsp butter, cubed
  3. 7 oz. bittersweet chocolate, chopped
  4. 3/4 tsp espresso powder
  5. 1 1/2 tsp vanilla extract
  6. 4 eggs
  7. 1/8 tsp salt
  8. 1/3 c packed brown sugar ( I used dark )
  9. 2nd layer:
  10. 2 Tbsp unsweetened cocoa powder
  11. 5 Tbsp hot water
  12. 7 oz. semi-sweet chocolate, chopped
  13. 1 and 1/2 c cold heavy whipping cream
  14. 1 Tbsp granulated sugar
  15. 1/8 tsp salt
  16. 3rd layer:
  17. 3/4 tsp powdered gelatin
  18. 1 Tbsp water
  19. 6 oz. white chocolate, chopped
  20. 1 and 1/2 c cold heavy whipping cream


  1. First layer:
  2. Preheat your oven to 325 degrees F.
  3. Butter a 9" round springform pan. Set aside.
  4. Separate egg yolks and whites. Set aside.
  5. In a double boiler, melt chocolate, butter and espresso powder, whisking until smooth. Cool slightly for 5 minutes.
  6. Add egg yolks and vanilla extract and whisk until well combined.
  7. In a large mixing bowl of a stand mixer, whip egg whites with salt for 30 seconds, or until frothy. Add half of the brown sugar, sprinkling it over the frothy whites. When the sugar is well mixed in, add the remaining half. Whip until soft peaks form. It can take from 1 to 3 minutes. Keep checking your peaks.
  8. Whisk in 1/3 of whipped whites to chocolate mixture. Do not whisk vigorously. Be gentle. Whisk just until the mixture lightens in color. Switch to a rubber spatula and gently fold in the rest of whites, until no streaks remain.
  9. Carefully pour the chocolate mixture into prepared pan. Smooth the top out.
  10. Bake the cake for 15 to 18 minutes ( center should spring back when gently pressed ).
  11. Leave the cake in the springform and cool completely, at least 1 hour. It will collapse. You can cover cooled cake and refrigerate overnight.
  12. Second layer:
  13. In a small bowl, mix together cocoa powder and hot water. Set aside to cool slightly.
  14. In a double boiler, melt chocolate. Cool 3 to 5 minutes.
  15. In a large mixing bowl of a stand mixer, whip cream, sugar and salt at medium speed. Whip for 30 seconds. It should slightly thicken. Increase the speed to high and whip the cream until soft peaks form. It should happen quite fast ( 20 to 30 seconds ) so do not walk away. Set aside.
  16. Whisk cocoa powder mixture with melted chocolate until smooth. At first it will look like your chocolate seized but keep whisking. It will come back together and be smooth.
  17. With whisk, fold in 1/3 of the whipped cream into chocolate mixture to lighten it. Switch to a rubber spatula and gently fold in the rest of the whipped cream, until no streaks remain. It is important or the mousse won't set right.
  18. Spoon the mousse over cooled cake layer. Tap the form on your countertop 3 times to get rid of any air bubbles. Smooth the top with a spatula. Wipe the inside of the pan with a paper towel from any mousse smudges. Refrigerate the cake for at least 15 minutes so the mousse can set.
  19. Third layer:
  20. Sprinkle gelatin over water in a small bowl. Quickly stir with a small spoon. Set aside.
  21. Place white chocolate in a large mixing bowl.
  22. In a small saucepan, heat up only 1/2 cup of cream until boiling. Remove from heat. Add gelatin and stir until completely dissolved. Pour the cream and gelatin mixture over white chocolate. Let sit for 20 to 30 seconds, then whisk until smooth. Set aside to cool to room temperature. Stir occasionally.
  23. It should slightly thicken.
  24. Whip the remaining cream at medium speed for 30 seconds. Increase the speed to high and whip until soft peaks form, about 15 to 20 seconds.
  25. With whisk, fold in 1/3 of the whipped cream to chocolate mixture. Do not whisk vigorously. Gently, until all smooth. Switch to a rubber spatula and fold in the rest of the whipped cream into your chocolate mixture, until no streaks remain.
  26. Spoon the white chocolate mousse over the semi-sweet chocolate mousse. Smooth the top out.
  27. Chill the cake for at least 2,5 hours.
  28. When ready to serve, run the knife around the cake in the pan. Remove sides of the springform.
  29. For clean cuts, use dental floss or warm but dry knife.
  30. Decorate slices with chocolate curls. Serve.
  31. Refrigerate the remaining cake, covered, for up to 3 days.


Please read the instructions before proceeding. It is important to plan well when making the cake. You cannot speed up any process. Every layer has to set. Be gentle when folding the whipped cream into chocolate mixtures. Whisk gently. It is important to fold in until no streaks remain for the proper setting of the mousse. Take your time - this cake is worth it.

Schema/Recipe SEO Data Markup by ZipList Recipe Plugin
 Triple Chocolate Mousse Cake

Original recipe from Cook’s Illustrated (November/December Issue, 2009)

I hope you will give this cake a try and enjoy the most amazing treat ever.


Come back tomorrow for another fun treat! In the meantime, you can follow our Pinterest board where you will find all the treats from the event!



Thanks for reading and please keep in touch. Subscribe to Crunchy Creamy Sweet and follow me on  Twitter, Facebook and Pinterest.

pixel Triple Chocolate Mousse Cake

  • Tutti Dolci

    Triple chocolate mousse?! Oh how decadent!

    • CrunchyCreamySw

      The most decadent! :) Thanks, Laura!

  • a farmer in the dell

    I’m armed with a fork, a double espresso, and now all I need is a way to reach through my computer screen and take a bite of that lovely cake!

    • CrunchyCreamySw

      lol Wish you could come over and join me :) Thanks!

  • Katie Jasiewicz

    I’m drooling at my computer right now… gorgeous cakes my friend!

    • CrunchyCreamySw

      Aww, thank you so much, Katie!

  • CrunchyCreamySw

    Awww, you are such a sweetie, Sally :) Thank you! This cake is as amazing as it looks! You need to try it!

  • Anne B

    Well my friend, you are definitely getting ‘ooohs and aaahhhs’ from me because this dessert is stunning. I can only imagine how sweet, luscious and light it is. And again….those pictures are just killer! Beautiful! : )

    • CrunchyCreamySw

      Oooh, I do hope you will make it. I just know you will love it, Anne! Thank you so much for your kind words about my photos. :) xoxo

  • Lizzy Do

    I’ve made this stunner a couple of times! Everyone always licks their plate clean!!! Your slice is picture perfect, Anna!

    • CrunchyCreamySw

      I’ve had it on my to-make list since I saw it on your blog! It truly is amazing! :) Thank you so much, Lizzy!

  • The Newlywed Chefs

    Anna, you’ve outdone yourself! This looks amazing. A-mazing.

    • CrunchyCreamySw

      Yay! Thank you! Thank you!

  • greensnchocolate

    Oh my – those pictures!!! Absolutely gorgeous. What a perfect Valentine’s Day dessert!

    • CrunchyCreamySw

      Aww, thank you so much! :)

  • Ashley

    Anna! This is just beautiful. I’d like a slice right now!

    • CrunchyCreamySw

      I wish I could share it! Thanks, Ashley!

  • gerryspeirs

    Major kudos for taking this on and making it look so amazing!! Choco heaven…

    • CrunchyCreamySw

      I’ve always wanted to try it. So glad I did :) It’s amazing! Thanks, Gerry!

  • Sandra Garth

    Oh my gosh Anna, you’re making me crazy with all of these tempting desserts. Each day is a party for my eyes!

    • CrunchyCreamySw

      lol Mission accomplished then :) Thanks, Sandra!

  • Savory Simple

    I’m in love with this gorgeous cake!

    • CrunchyCreamySw

      Juts wait till you try it! Pure heaven! Thanks, Jen :)

  • Amanda @ Once Upon a Recipe

    Wow, this looks incredible! So chocolately and decadent!

    • CrunchyCreamySw

      Yay! Thanks so much, Amanda!

  • Heather Geddert

    in the first layer, when do you add the remaining 1/2 of the brown sugar…?

    • CrunchyCreamySw

      Hi Heather! Add the remaining brown sugar after the first half of it is mixed in. Thank you for your question!

  • Sylvie Shirazi

    Oh my, that’s a showstopper!

    • CrunchyCreamySw

      Thank you so much, Sylvie!

  • Colette

    Look at that, I’m melting…

    • CrunchyCreamySw

      lol Thanks, Colette!

  • Carol | a cup of mascarpone

    Anna, this looks exceptional! Absolutely lovely! Happy Valentine’s Day!

    • CrunchyCreamySw

      Happy Valentine’s Day to you too, Carol! Thank you!

  • CrunchyCreamySw

    It is a must-make for sure :) Thanks, Minnie!

  • Anita at Hungry Couple

    Beyond gorgeous!!

  • Nancy

    Holy crow, Anna – this is divine! Your photos are gorgeous and I can’t get over how perfect, creamy, luscious and decadent this cake is. What a labour of love – I hope you got to enjoy every single mouthful of this stunner.

  • Paula @ Vintage Kitchen

    What I like most about this cake is that the three layers unite as one. I usually see some sort of separation between them that seems artificial. This is gorgeous Anna, and doesn´t take longer than many breads I make!

  • Alice Choi

    oh my goodness! I just saw this triple chocolate mousse cake. . just stunning!!! oh my goodness, beautiful! I am definitely going to make this.

  • Pingback: Ten Minute Fudge Sauce | Crunchy Creamy Sweet

  • shadow1760

    i’ve made this desert several times and everytime it has been a huge success. A definite crowd pleaser with a great big wow factor. it looks as pretty as it taste. Rich but light and airy. definitely a project that takes me one night to put together and we enjoy it the next day. I take the extra step of lining the sides with parchment paper which adds a little height to the sides so that it comes apart from the pan very easily and I can fit all the filling in my springform pan that way too. most pans are just under 3 inches high. If you have a pan at least 3 inches high then you’re OK. I use craft wire to cut the cake. I used Ghirardelli chocolate and added a little bit of stabilizer to the white mousse 2 give it an extra airiness and stiffness.

    • CrunchyCreamySw

      Thank you!

  • Rajani

    Hi. I totally love your patience and dedication at making this triple layered cake for your special person! I am in the process of creating a similar triple layered cake for my hubby’s birthday – and all eggless and gelatin-free (used china grass instead). Crossing my fingers and waiting to unmould tomorrow.
    Your tips to get the layers right were so useful to me. Much thanks.

    • CrunchyCreamySw

      So glad I could help, Rajani! Thank you!

  • Jay

    Beautiful, beautiful, beautiful…raised to the power of N. it’s my bestie’s birthday tomorrow, and I stumbled upon your recipe. I started making it since last night, just done the final layer now and cannot wait to see the excitement on my friend’s face tomorrow… Thank you Anna for brightening up my day and doing the same for my friend tomorrow… My fingers are crossed. Keep it coming, appreciate it.

    • CrunchyCreamySw

      I love your comment, Jay! I hope the cake turned out and you both loved it! Let me know! Thank you!

  • Hesitantbaker

    I am a completely new baker and LOVE the pictures and look of this entire cake. Would the difficulty be too hard for me if I have never made a cake and would like to surprise someone for their birthday in two days with this?

    • CrunchyCreamySw

      Hi! Thank you so much for the lovely comment. :) I have to tell you, this cake is very labor intensive. It doesn’t really require much baking (only the first layer) but it would be great if you had an experience whipping up whites and cream to soft peaks… I would say: if you can totally devote time to it without distractions, you can give it a go. I hope my instructions will help along the way. Either way, let me know what you decide! Thank you!

  • Ronika

    Ok, I just made this for the 2nd time… The first time I took it to work (that’s where I take all my test recipes..LOL.. ) and they ABSOLUTELY LOVE IT.. I must admit.. I only thought it was OK (don’t really care for bitter chocolate)… but they raved about it so much.. a Girl who is leaving requested it before she left.. so Here I am.. making it for her!… Thanks.. it looks So good.. and I hope they enjoy it as much as they did the first time!!!

    • CrunchyCreamySw

      lol I love it! This cake is just irresistible! Thanks, Ronika!

  • MsEarth Rullan

    Thanks for sharing this ! I’m gonna make one soon!

  • CathyP

    I just finished making this cake this morning and took it to a friends tonight for dinner. It was wonderful and everyone loved it. Well worth the time and I will make it again. Thank you for sharing. :)

    • CrunchyCreamySw

      I am so happy you gave it a try and everyone enjoyed it! Thank you, Cathy!

  • CrunchyCreamySw

    I haven’t tried it in a mini cheesecake pan so I can’t tell you if the ratios would be correct… Sorry…. Let me know if you try it!

  • Lucas Joseph McCullum

    I just made the cake however I missed the part to add the remaining egg whites. Not knowing this I mixed in an extra egg white before baking. I hope this wouldnt affect it too much. It seemed the first layer was heavier than the others. Secondly on the last set of instructions for the third layer, I saw it says add part of the heavy whipping cream, then the rest. After which it says add whipping cream, I didnt quite understand this however I added the remaining whipping cream, folded it as directed it and poured it over the top. Does this sound about right? I really hope it turns out well!

  • Amenah

    I made this cake, i think it was the best chocolate cake ive ever had! Thanks for the recipe! Although for some reason i felt my cake turned out a little too dense. Also, Do u think next time for the chocolate mousse i can use milk chocolate instead of semi sweet?

    • CrunchyCreamySw

      I totally would! You can just make that one layer with the milk chocolate and see if you like it!

  • tif

    hi good day :) i already made the baked layer now moving to the second hehe was wondering when you say. 1 1/2 heavy whipping cream does that mean 1 1/2 already whipped cream? or not yet whipped? thanks :)

    • CrunchyCreamySw

      not yet whipped

  • CrunchyCreamySw

    Hi Carla! First of all, you are not an idiot. This cake is not easy to make. If you are having problems with the first layer – I think the problem is in how long you whip the egg whites. It should collapse after baking but should not be “as thin as a pancake”. Did you follow the instructions on whipping the whites?

  • CrunchyCreamySw

    I will try and post the measurements.

  • CrunchyCreamySw

    I am so happy to hear that, Sheena! Please, let me know how it goes! Thank you!

  • Allie

    How did you cover the remainder of the cake when stored back in the fridge? Want to eat little by little without the fridge spoiling it, or without ruining the cake trying to properly cover it. Thanks!

    • CrunchyCreamySw

      Hi Allie! Thank you so much for the comment! If you don’t have a cake stand with a cloche or a cake carrier than you can insert few toothpicks in the cake and then cover it with a saran wrap. The toothpicks will keep it from sticking to the cake. Hope this helps!

  • Kiks

    The 1st layer just got out of the oven, and i just finished mixing the 2nd layer as well is it still usable after 1hr after the 1st layer has cooled and set?

  • Rabia

    Just refrigerated this awesome cake…i hope it comes out the same as in the photos above…made it for my son’s bday tomorrow…keeping my fingers crossed!

  • Thuy

    I tried making the first layer, and when it cooled, it collapsed like you said. But, even the sides did as well so they are no longer touching the sides of the pan. I imagine this might be a problem; how might I fix this?

  • alyssa

    Nice cake and I am going to make it. But may I ask how do you chill the cake and can I put it overnight and serve it like tomorrow. And well is it possible to decorate the cake before serving it? (Not yet sliced) thanks in advance!

  • serene

    Hi awesome cake! But how Can I adjust the ingrediants into an 8 inch cake?