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Chocolate cake layers are filled with chocolate mousse and toffee pieces, then covered in a rich, chocolate ganache.

Chocolate Mousse Crunch Cake | www.tasteandtellblog.com

Happy Friday!!

I am headed for the mountains today for our annual family reunion. It’s extended family and always so fun to see cousins and their kids that I only get to see about once a year. And you can’t beat hanging out in the Utah mountains!

I mentioned before that my mom is the one that is in charge of the reunion this year. And let’s just say things have been a little hectic around here lately. It’s not even that I have a lot of responsibilities that she has given me to take of, but I’m going to be happy to see it all come into fruition. Let’s just say there have been quite a few nights lately with very little sleep. I’m hoping to come home on Saturday and to be able to actually go to bed before 1am. Fingers crossed!!

Speaking of my mom – I have to admit something. She made this cake. But I was there when she made it, and I definitely partook in the cake, so I figured it was fair game to blog about, right? ๐Ÿ™‚ And since layer cakes are definitely few and far between here on Taste and Tell, I figured it was a great excuse to share one with you all.

I loved this cake for a few reasons. First, if you are looking to wow your guests, this cake is a looker. Second, can you really go wrong with chocolate, filled with chocolate, and then topped with chocolate? Oh yeah – and don’t forget to throw in the layers of toffee pieces! And third – this cake is easy. Super easy. The cake itself starts with just a boxed cake mix, but feel free to use your favorite chocolate cake recipe if you want to. But although the components look difficult, they are all in fact quite easy.

The only problem that came with this cake is that when it is cold, the ganache makes it a little bit harder to slice through the cake without the filling oozing out. But none of us cared much – every last bite of this cake was eaten!

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Chocolate Mousse Crunch Cake
Prep time
Cook time
Total time
Chocolate cake layers are filled with chocolate mousse and toffee pieces, then covered in a rich, chocolate ganache.
Serves: 8-12 servings
  • 1 package Devil's Food Cake Mix, plus ingredients called for on the box
  • crushed Heath bars, or packaged Heath bits
  • 1 teaspoon gelatin
  • 1 tablespoon cold water
  • 2 tablespoons boiling water
  • ½ cup sugar
  • ¼ cup unsweetened cocoa powder
  • 1 cup heavy whipping cream
  • 1 teaspoon vanilla
  • ½ cup dark or semisweet chocolate chips
  • ½ cup heavy cream
  1. Bake the cake according to the package directions in 2 8-inch round pans. Cool completely.
  2. Make the mousse: Combine the gelatin and cold water in a small bowl and allow to sit for 1 minute. Whisk the boiling water into the gelatin mixture, then allow to cool.
  3. In a medium bowl, combine the sugar, cocoa powder, cream and vanilla. Beat until the mixture forms medium-stiff peaks. Beat in the gelatin mixture. Refrigerate for 30 minutes.
  4. Make the ganache: Combine the chocolate chips and cream in a microwave safe bowl. Heat on high for 3-4 minutes, then stir until smooth. (If the ganache is too thin, refrigerate until it thickens to your desired thickness.)
  5. To assemble the cake: Using a serrated knife, level the domes off of the cooled cakes. Place one of the cakes on a serving plate. Spread the mousse over the top of the cake. Sprinkle with Heath bits. Place the second cake on top. Spoon the ganache over the top of the cake, allowing it to drip over the sides. Sprinkle with additional Heath pieces. Refrigerate until ready to serve.

More toffee favorites:

Toffee-Coconut Rocky Road Bars | www.tasteandtellblog.comToffee-Coconut Rocky Road Bars

Skor Squares - only 4 ingredients! | www.tasteandtellblog.comSkor Squares

Glazed Toffee Bonbons | www.tasteandtellblog.com #recipe #cookiesGlazed Toffee Bonbons

Around the Web:
Chocolate-Toffee Surprise Cupcakes from Tutti-Dolci
Apple Toffee Crumble from Something Swanky
Toffee Banana Coconut Muffins from Inside BruCrew Life

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35 Responses to Chocolate Mousse Crunch Cake

  1. Rosa says:

    A delightful cake! Really tempting and luscious looking.



  2. Have fun at the reunion and I love this cake! The ganche and toffee are perfect. And thanks for those related recipe reminders…they seem new-to-me!

  3. I agree – this cake is a looker! Wow. Looks incredible!! ๐Ÿ™‚
    Your mom did an awesome job!! Enjoy the reunion!

  4. Tieghan says:

    Have fun this weekend!
    This cake is my kind of cake! Anything with that much mousse in the middle is calling my name! YUM!

  5. Toffee and cake? Who can not love that? I love the simple icing glaze on this cake and the fact you left the sides exposed. It always makes for something more dramatic. YUM!

  6. I’ve just died and gone to heaven. Chocolate mouse and toffee crunch? This cake is making me crazy.

  7. This cake is so gorgeous! Love all those fancy layers…mmm.

  8. This cake looks amazing! I love mousse in cakes! Will go fast for sure!

  9. This cake looks incredible and I bet is wonderful to eat!!

  10. Chels R. says:

    Gorgeous cake and oh, how I wish I had a slice right now. I’m obsessed with toffee!

  11. Emily says:

    Oh my gosh, the cake is absolutely beautiful! I need to come see how you photograph your food. Maybe I could get some pointers. ๐Ÿ™‚ Have so much fun!

  12. Love the ganache and the toffee topping!

  13. I know you’re out having fun this weekend.
    But this cake is just insane.
    I always need a crunch factor in my baked sweet treats (and my salads too!)

  14. Joanne says:

    I think this cake is DEFINITELY fair game..mostly because i’m so excited to make it! All those layers of chocolate…how could it not be amazing. Have fun at your reunion!

  15. Hi Deborah! I just came across your blog and am really enjoying browsing through it. Also, this cake looks amazing! ๐Ÿ™‚

  16. Kim Beaulieu says:

    I would freak out if someone made this for me. It’s gorgeous.

  17. Have a great time at the reunion! But before you leave, can you send me a couple of slices of this cake? It looks absolutely heavenly!

  18. katie says:

    Oh man you have me salivating here. This cake looks to die for! Beautiful photos!

  19. Maria says:

    Love this cake!

  20. Sitting here with my jaw dropped open…that is one fabulously awesome cake! Chocolate and toffee is a great combo!

  21. carrian says:

    who cares about difficulty in slicing when you’ve got this to devour!!!!

  22. Nutmeg Nanny says:

    Holy moly. This cake is divine! My mouth is watering over here.

  23. Seriously! I don’t think I’ve ever seen a prettier cake! Amazing!

  24. Tanya says:

    I am completely wowed!!! I want THIS cake for my birthday, it’s wonderful! Hope you had a great reunion!

  25. I love how stunning this cake looks with out having to sped a lot of tedious time frosting!

  26. Carolyn says:

    Yeah, I am pretty sure this would wow me! I have been thinking of making a low carb mousse cake, I only hope it turns out as lovely as yours!

  27. Bob Taubert says:

    Absolutely awesome cake. Made it for my girlfriend tonight as a small thank you for her help after surgery. Everyone in this house loves it!

  28. Shruthi says:

    Excellent recipe! Made it for my daughter’s birthday and received wonderful compliments for it. I see myself making it several times in the times to come!!

  29. Ashley says:

    Fantastic cake!!! My family loved it! Very easy and equally yummy! I will most definitely be making this cake again!!

  30. Rachel says:

    This recipe is from Our Best Bites. You should probably credit them somewhere on here because it’s from their website and cookbook that was published several years ago

    • Deborah says:

      Hi Rachel – There is credit listed on the recipe. ๐Ÿ™‚ I love the OBB girls and their cookbooks are amazing! I make it a point to always credit. ๐Ÿ™‚

  31. Ann O says:

    I have not made this cake before, but my son-in-law asked me to bring it to his birthday party which will be held at his sister’s house. What suggestions do you have for transporting this cake? I thought I would bring it in pieces and assemble it there but I don’t want to make a mess in her kitchen. Help!!

    • Deborah says:

      I would make the cake and the mousse and just assemble it at her house. The ganache is easy to make so it shouldn’t make too much of a mess. I think assembling it there would be your best bet, as I don’t know how well it will travel with mousse already in the cake. I hope that helps!

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