A Chocolate Lovers utopia. This chocolate mousse cake with truffles on top is just what the doctor ordered. It’s perfect for a decadent dessert!
Three Layer Chocolate Mousse Cake with Chocolate Raspberry Truffles
Oh Wow! This is a chocolate-lovers dream cake!
Three layers of Chocolate Cake
Chocolate Mousse Frosting
Chocolate Raspberry Truffles
This chocolate mousse cake was just what the doctor ordered for your tweet tooth. It’s a great cake for a special birthday celebration. My husband even went so far to say her would have liked this cake for his grooms cake.
Let me take a minute to harness my inner Jack Nicholson for a second … ahem… You can’t handle the Chocolate. Lol… okay, I’m sorry for that… But in all honesty, see the rays of light in the photo above? God has even endorsed this cake. I loved the light so much that I didn’t want to edit them out. It was the perfect effect.
Yes, this cake was THAT good!
If you have made your cake and truffles, you can make your frosting. If you’re ambitious and have the time, you can make this cake in one day. It’s not difficult. The truffles can sit overnight and the iced cake can sit over night and all you have to do is finish decorating it the next day.
Since the frosting is a mousse, it’s best eaten the day that it’s served. However, my husband had no problems enjoying this cake two days later. It was still amazing!
Chocolate Mousse Cake with Truffles
A Chocolate Lovers utopia. A rich cake with a mousse frosting and chocolate truffles.
Ingredients
For the Mousse Frosting
- 2 cups heavy cream
- 3/4 oz unsweetened cocoa powder
- 13 oz bittersweet chocolate
- 1 sticks (1/2 cup) butter, cut into small cubes
- 1 teaspoons vanilla
- pinch of salt
- 7 egg whites
- 1/2 cup sugar
- 1 1/2 - 2 C chopped macadamia nuts
Instructions
- Prepare a large bowl for an ice bath. Be sure that the medium bowl will fit inside.
- In a medium pot, combine the cream and cocoa and heat until a full boil forms. Remove from heat and pour over chocolate pieces and butter. Wait five minutes for the milk to melt the chocolate then slowly whisk until the chocolate and butter are completely melted, blended and smooth.
- Add in the vanilla and salt, then place the bowl into the prepared ice bath and whisk until the chocolate has come to room temperature. Lumps will form if you stop mixing. Once cool, remove from the ice bath and set aside.
- Whip the egg whites with a whisk attachment in a mixer. Once the whites are foamy, slowly add in the sugar and continue whipping until stiff peaks form.
- Fold in a third of the chocolate into the meringue then gradually add in all of the chocolate and fold until the chocolate and meringue are incorporated.
- Reserve a cup of the frosting.
To assemble the cake
- Place the top layer of the cake, upside down into a springform pan. Add ⅓ of the chocolate mousse frosting allowing it to run over the sides. Place the second slice of cake on top along with more frosting and finally top with the bottom slice of the cake with the bottom up (smooth side up). Cover the cake and fill in the sides with the frosting. Allow to chill overnight.
- Slide a warm, dry knife along the edge of the springform pan and slowly release the clasp. Remove from the pan and place on a serving dish.
- * If you can safely remove the bottom of the pan, do so. I used a Large Cake Lifter to move my cake off the springform bottom and onto the cake platter.
- Use the extra frosting to touch up any spots and add it to the top of the cake. Use a serrated knife to make groves in the top of the cake or you can use an inexpensive tool like this Decorating Comb.
- Take the chopped macadamia nuts and gently press them into the sides of the cake. A lot will fall off onto the platter. Just keep going around until the cake sides are coated.
- Finally, top with the truffles and place in the fridge for an hour before serving. I found this cake was best served cold.
Recipe Notes
Recipe via Fine Cooking Chocolate Magazine

This Chocolate Mousse Cake is part of a series. Find the Chocolate Cake Recipe and Torting Tutorial HERE. Find the recipe for Chocolate Raspberry Truffles HERE.
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Carol says
September 20, 2013 at 12:49 pmLooks delicious!!!! For all chocohaolics!!!!
Karyn Granrud says
September 21, 2013 at 9:41 amIt’s totally on your diet! Give it a try – you’ll love it!
Cindy Eikenberg says
September 21, 2013 at 7:56 amKaryn, WOW, this looks amazing! That’s a died and gone to heaven chocolate lover’s dream if I’ve ever seen one! Thanks for sharing and pinning – have a fabulous weekend!
Karyn Granrud says
September 21, 2013 at 9:42 amThanks Cindy. It sure was a great cake. Thanks for stopping by.
[email protected] says
September 21, 2013 at 2:18 pmwow this looks sooo yummy! I need to try this right away! pinning!
The Answer Is Chocolate says
September 23, 2013 at 1:46 pmOMG I want to come through the screen!!! PINNED
Karyn Granrud says
September 23, 2013 at 2:01 pmHahaha! I knew you would like it, Carol. Thanks for the pin.
Bismah says
September 24, 2013 at 8:48 amWow!!! This sure looks amazing and tasty. I will definitely be trying this some time. I love the way you decorated it. Great job at making this cake look so delightful and delicious!
Stopping by from the “The Salt Tree Link Up”. Following you on G+, Twitter, and Facebook. Looking forward to reading more of your posts.
Have a great week 🙂
Bismah @
Simple Mama
Karyn Granrud says
September 24, 2013 at 6:59 pmWow! Thanks so much for following me! It’s great to have you as a friend!
Winnie says
September 27, 2013 at 6:54 amWhat a beautiful cake!!
It looks totally scrumptious – just the way I like it 🙂 🙂
Karly says
September 29, 2013 at 12:10 pmMost gorgeous cake ever! Thanks for linking up with What’s Cookin’ Wednesday!
Karyn Granrud says
September 29, 2013 at 8:53 pmThanks so much Karly.
The Answer Is Chocolate says
October 2, 2013 at 9:44 pmHow could I not feature this when my link party opens up tomorrow night? OMG!
tash @ the velvet moon baker says
October 17, 2013 at 10:53 amThis cake looks absolutely divine, I would kill for a piece of this right now
Karyn Granrud says
October 17, 2013 at 1:01 pmMe too! I wish they didn’t disappear when I eat them 🙁
Brenda Harris says
November 4, 2013 at 11:41 pmIs it 2 sticks of butter or 1/2 cup? This looks wonderful. I want to try it.
Karyn Granrud says
November 5, 2013 at 12:02 pmoh my… I double checked and it’s 1/2 cup. Just 1 stick. Thanks so much for asking.
northern cottage says
January 1, 2014 at 5:50 pmoh my word – yum! would it be wrong to eat the WHOLE cake by myself??!!
♥ http://www.NorthernCottage.net
Karyn Granrud says
January 1, 2014 at 8:35 pmnope! not at all! lol 🙂
Stefany says
February 25, 2015 at 9:43 pmI can’t even begin to tell you how good that looks to me right now. I haven’t had chocolate in a good week and have been begging someone to bake me a cake. I may have to just do it myself after seeing this! ha!
Karyn Granrud says
March 1, 2015 at 9:55 pmThis was a delicious chocolate cake. I hope you enjoyed it!
Kyla @HouseOfHipsters says
February 27, 2015 at 11:14 amOk, so this looks almost too pretty to eat. Although, if a slice happened to be put in front of me, I’d totally devour it! Would love to have you share it on the Found & Foraged linky party held every Saturday night at 8PM CST on http://houseofhipsters.com/ Hope to see you there!
Swagata says
June 29, 2019 at 6:07 pmAre the dry ingredients for this cake measured by weight, ot by volume?
Thanks!
Karyn Granrud says
July 17, 2019 at 3:56 pmwell, both I guess. For the mousse frosting recipe – the butter and sugar are by volume in cups and the cocoa and chocolate are by weight in ounces. For the actual cake recipe the flour is by weight in ounces.