This Chocolate Mousse Crunch Cake is my all-time favorite special occasion cake. Not only does it wow people presentation-wise, but it’s pretty knock-your-socks-off tasty as well. As long as you like chocolate. Because if you’re a chocolate hater, this recipe isn’t for you. It’s got 2 layers of rich chocolate cake, sandwiched with decadent chocolate mousse, drizzled with ganache and sprinkled with chopped toffee bits. If you like, you can even top it with a cloud of whipped cream like I did in these photos.
One of the great things about this easy chocolate cake recipe is that you can just use a boxed cake mix. I figure that there’s so much going on here that you don’t need to bother with a from-scratch chocolate cake, you know? And if you make the ganache ahead of time and just heat it up, and make the cake ahead of time, by a few hours or a day or even a few days (just wrap the layers in plastic wrap and freeze them), the rest comes together in no time.
You can bake the cake layers ahead of time if you like and store them in the freezer until ready to use. Our favorite cake pans to use are the kind with straight sides like these ones. The filling for this cake is a rich chocolate mousse that’s incredibly easy to make. It actually makes more mousse than you probably need, so feel free to fill it as thick or as thin as you like and snack on the rest- because you made the cake so you get the extra mousse!
Fill and Top the Cake
This chocolate cake is topped with…you guessed it- more chocolate. To get nice drips down the sides, avoid trying to actually spoon ganache down the side of your cake. Spread a nice even layer right on top. Then use a spoon to gently start spreading toward the edges. You just need to nudge a little and you’ll see the chocolate wave start moving toward the side and down the edge. Let gravity do the work! That way you get nice pretty drips without overdoing it. You can sprinkle some toffee bits on top and you are ready to serve!
OR, if you like, I sometimes like to top it with a fluffy cloud of sweetened whipped cream as well.
Helpful Tools for this RecipePrint
Chocolate Mousse Crunch Cake
An easy chocolate mousse and toffee filling is sandwiched between moist layers of chocolate cake and finished off with rich, gooey ganache and more toffee bits.
Place second layer on top of Heath bits.
Spoon ganache over the top layer, allowing it to drip down the sides. Sprinkle with additional Heath bits and refrigerate until ready to serve. If desired, top with sweetened whipped cream before serving.
This recipe makes more mousse than you will probably need. Feel free to use as much or as little as you desire in the filling and snack on the rest!
Keywords: Chocolate Cake, Chocolate Mousse, Chocolate Crunch Cake, Occasion cake
Oh my word! I for one love chocolate, and can't get enough! I need to try this cake, like immediately. Yum!
What a beauty. That treasure looks right up my alley. Thanks for sharing, gals!
Um, wow, that looks AWESOME!
That looks so good! Congrats on your blog. If I could change one thing…it would be for you to add an option so I could print recipes on 3 x 5 or 4 x 6 card sizes. Otherwise, I wouldn't change a thing!
Wow! This looks AMAZING!! I have missed your blog so much. [We had laptop issues for months and have now upgraded to a brand-new one – wahoo!!] I am half-tempted to go back through ALL of the posts I missed and catch up.
Time to wipe the drool of the new computer…. 😉
Looks delish, but like Amber I'm curious what do you do with the other half of the chocolate mousse? Or is it possible, dare I say, to make a half batch of the mousse?
omg, I'm going to hate you for this…
However, I will counter your triple chocolate monster with this Chocolate Stout Cake. Beer & chocolate, what could be better? (and the alcohol burns off – I serve this to kids)
My job is dessert every Sunday when my extended family gets together. This looks wonderful and I will be making it this weekend! Thanks for all of your wonderful ideas.
That looks SOOO good! Now I need to plan something so I'm not left with half a cake to myself at home all day long….you know? Thanks for the great recipes, looking forward to the next year of delicious food and great ideas!
That is insane… OMG amazing and I am sure worth every calorie!! Looks incredible!
and I think I've just discovered my Easter Day desert I'll be making!!! YUM.
That looks insane! Yummy Insane!
Gonna have to try this recipe! Thanks for sharing and great photos too.
Yum! I can't wait to try this one. Thanks for all your great recipes!
Decadent and delicious. YUM!!
What a knockout of a cake. It looks sinfully declious 🙂
Good thing I don't have a very good reason to make this anytime soon… this looks very dangerous!!(I am sure I will come up with a reason soon!)YUM!
Looks divine!! I will have to make this soon. My husband will just love it! 😀 Thanks for the great posts, I look forward to reading them!
Ohhhhhh yum. Kate, you do know my birthday is April 21st, right?? 🙂
This looks wonderful. I am preheating my oven right now so I can make it. Just thought I'd point out an easy way to avoid the problems you might have by halving the mousse recipe -just boil a quarter cup of water and then measure out the 1 tablespoon that's needed.
Wow, that looks FANTASTIC! Thank you for the blog you inspire me to be more adventurous!
This looks amazing!
Happy birthday. This was so not the post a pregnant chick should open first thing in the morning! Drool on the computer could totally be bad. My bday is coming up in April and I am trying to figure out who I could print this out for and con/beg/plead/strong arm into making this for me!
Wonderful! Happpy Birthday! NOw, I just wish you could have sent everyone a piece? Wouldn't that be something?
I think this just became my favorite cake too – chocolate, layered with chocolate & then topped with chocolate – YUM! Can't wait to try this :)Happy Birthday!
Am I just missing something or do you only use half the mouse? What do you usually do with the extra? Just eat it cuz that'd be great or do you make something else?
Yum! Looks easy, and delicious… Thanks!
Happy Birthday! I LOVE your blog! Soooo not calorie counting friendly! LOL TFS!
This cake looks heavenly! I think rich is an understatement!!! My anniversary is next week and my hubby LOVEs mousse, so this will make for a perfect dessert! Thanks for sharing, I really enjoy your blog and the yummy recipes!
I used this recipe to upscale my daughter’s request for a chocolate birthday cake. Everyone loved it! Thank you!