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Triple Chocolate Mousse Cake

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

If you love mousse desserts, you may also like my Chocolate Mousse For Two recipe as well as the Pumpkin Mousse Pie.

triple mousse 6 Triple Chocolate Mousse Cake

TRIPLE CHOCOLATE MOUSSE CAKE

Do you see that slice up there? This 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 sweet bliss. I had this Triple Chocolate Mousse Cake on my to-make list for so long and it finally happened! We just love desserts with sweet mousse! My Pumpkin Mousse Pie is my go-to for Thanksgiving dinner.

Triple Chocolate Mousse Cake Ingredients:

  • butter
  • bitter-sweet chocolate
  • espresso powder
  • vanilla extract
  • 4 eggs
  • salt
  • brown sugar
  • cocoa powder
  • water
  • semi-sweet chocolate
  • 3 cups whipping cream
  • granulated sugar
  • powdered gelatin
  • white chocolate

triple mousse 1 680x1024 Triple Chocolate Mousse Cake

How long does it take to make this 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.

How does it taste?

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.

triple mousse chocolate cake a Triple Chocolate Mousse Cake

MORE MOUSSE RECIPES:

5 from 32 votes
triple mousse chocolate cake a 150x150 Triple Chocolate Mousse Cake
Print
Triple Chocolate Mousse Cake
Prep Time
6 hrs
Cook Time
18 mins
Total Time
6 hrs 18 mins
 
The most impressive and decadent of all chocolate cakes. Light and airy in texture and not-overly-sweet in taste. Pure sweet bliss!
Course: Dessert
Cuisine: American
Keyword: triple chocolate mousse cake
Servings: 8 people
Calories: 554 kcal
Author: Anna
Ingredients
1st layer:
  • 6 Tbsp butter cubed
  • 7 oz bittersweet chocolate chopped
  • 3/4 tsp espresso powder
  • 1.5 tsp vanilla extract
  • 4 eggs
  • 1/8 tsp salt
  • 1/3 cup packed brown sugar I used dark
2nd layer:
  • 2 Tbsp unsweetened cocoa powder
  • 5 Tbsp hot water
  • 7 oz semi-sweet chocolate chopped
  • 1.5 cup cold heavy whipping cream
  • 1 Tbsp granulated sugar
  • 1/8 tsp salt
3rd layer:
  • 3/4 tsp powdered gelatin
  • 1 Tbsp water
  • 6 oz white chocolate chopped
  • 1.5 cup cold heavy whipping cream
US Customary - Metric
Instructions
First Layer:
  1. Preheat your oven to 325 degrees F.
  2. Butter a 9" round springform pan. Set aside.
  3. Separate egg yolks and whites. Set aside.
  4. In a double boiler, melt chocolate, butter and espresso powder, whisking until smooth. Cool slightly for 5 minutes.
  5. Add egg yolks and vanilla extract and whisk until well combined.
  6. 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.
  7. 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.
  8. Carefully pour the chocolate mixture into prepared pan. Smooth the top out.
  9. Bake the cake for 15 to 18 minutes ( center should spring back when gently pressed ).
  10. Leave the cake in the springform and cool completely, at least 1 hour. It will collapse. You can cover cooled cake and refrigerate overnight.
Second layer:
  1. In a small bowl, mix together cocoa powder and hot water. Set aside to cool slightly.
  2. In a double boiler, melt chocolate. Cool 3 to 5 minutes.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
Third Layer:
  1. Sprinkle gelatin over water in a small bowl. Quickly stir with a small spoon. Set aside.
  2. Place white chocolate in a large mixing bowl.

  3. In a small saucepan, heat up only 1/2 cup of cream until boiling. Remove from heat. Add gelatin and stir until completely dissolved.

  4. 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. It should slightly thicken.

  5. 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.
  6. 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.
  7. Spoon the white chocolate mousse over the semi-sweet chocolate mousse. Smooth the top out.
  8. Chill the cake for at least 2,5 hours.
  9. When ready to serve, run the knife around the cake in the pan. Remove sides of the springform.
  10. For clean cuts, use dental floss or warm but dry knife.
  11. Decorate slices with chocolate curls. Serve.
Recipe Notes

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.

Nutrition Facts
Triple Chocolate Mousse Cake
Amount Per Serving
Calories 554 Calories from Fat 324
% Daily Value*
Fat 36g55%
Saturated Fat 21g131%
Cholesterol 112mg37%
Sodium 208mg9%
Potassium 405mg12%
Carbohydrates 50g17%
Fiber 4g17%
Sugar 41g46%
Protein 7g14%
Vitamin A 415IU8%
Vitamin C 0.1mg0%
Calcium 97mg10%
Iron 3.8mg21%
* Percent Daily Values are based on a 2000 calorie diet.

Reader Interactions

Comments

  1. Crystal Reed says

    I have made this so many times now, I have lost count. If youd like a recipe to impress…make this one!

    Reply

  2. May says

    The cake turned out to be great and delicious …it was worth the effort..everyone liked it especially my kids….and shall i say many reached out for a second and third piece 🙂

    Reply

  3. Rachel says

    I can’t seem to find the recipe for this cake, even clicking on the link on this page for it. I don’t know if it’s just me or if it somehow got delete. Can you help me with that? Thanks!

    Reply

    • Anna@CrunchyCreamySweet says

      Hi Rachel! I am so sorry about that! We are switching to a new recipe plugin and some recipes are not showing up. I just fixed this one! You should be able to see and print the recipe now. Let me know if there is anything else I can help with! Have a beautiful weekend! -Anna

      Reply

  5. alyssa says

    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!

    Reply

  6. Thuy says

    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?

    Reply

  7. Rabia says

    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!

    Reply

  8. Kiks says

    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?

    Reply

  9. Allie says

    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!

    Reply

    • CrunchyCreamySw says

      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!

      Reply

  12. CrunchyCreamySw says

    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?

    Reply

  13. tif says

    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 🙂

    Reply

  14. Amenah says

    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?

    Reply

  15. Lucas Joseph McCullum says

    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!

    Reply

  16. CrunchyCreamySw says

    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!

    Reply

  17. CathyP says

    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. 🙂

    Reply

  19. Ronika says

    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!!!

    Reply

  20. Hesitantbaker says

    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?

    Reply

    • CrunchyCreamySw says

      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!

      Reply

  21. Jay says

    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.

    Reply

    • CrunchyCreamySw says

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

      Reply

  22. Rajani says

    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.
    Rajani.

    Reply

  23. shadow1760 says

    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.

    Reply

    • Amanda says

      Parchment paper! What a great idea for easy pan removal. Also thanks for mentioning the pan height in your comment. Made this for the first time today. I only have small cake pans, about 2 inches high. Oops. Definitely couldn’t fit the 3rd layer so I’ve put it into another cake pan. Crossing my fingers that I can fit it with the other layers later

      Reply

      • Amanda says

        I Should mention that I’m new to cakes and missed the springform pan reference in the beginning of the instructions. **Anna maybe add a Material section to the recipe card for us newbies? Either way I learned my lesson and will be investing in the right pan, because I will definitely be making this again.

        Reply

        • Anna@CrunchyCreamySweet says

          Hi Amanda! Thank you for the suggestion! I love it! I am so glad you tried the recipe! Thank you for the comment!

          Reply

  24. Paula says

    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!

    Reply

  25. Nancy says

    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.

    Reply

  35. Lizzy Do says

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

    Reply

    • CrunchyCreamySw says

      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!

      Reply

  36. Anne B says

    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 beautiful! Beautiful! : )

    Reply

    • CrunchyCreamySw says

      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

      Reply

  37. CrunchyCreamySw says

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

    Reply

  38. a farmer in the dell says

    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!

    Reply

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