Chocolate Cake with Swiss Chocolate Mousse

Light, fluffy, Swiss Chocolate Mousse gets sandwiched between layers of moist dark chocolate cake, worthy of any chocolate-lovers dreams.

I made this cake for Tasha’s birthday last weekend, and it was one of the most enjoyable chocolate cakes I’ve ever had. It had a rich chocolate flavour without being too overpowering, and the Swiss Chocolate Mousse was a delicious “icing” counterpart. I think what’s so great about this cake is that the “icing” is actually a Swiss chocolate mousse.  That means, it’s much lighter, fluffier, and isn’t nearly as sickeningly sweet as some more traditional buttercream icings. I was pleasantly surprised with how well it paired with the cake, and happy that I wasn’t adding a ton more sugar to the icing. You could eat a decently sized slice of this cake and not go cross-eyed from an overdose of sugar.

I can’t, however, take credit for the chocolate cake, as I use the recipe featured on Just a Spoonful Of... It was the perfect chocolate cake, though! Rich, moist, and chocolatey, with the perfect texture. They did rise up a bit too tall in the middle though, so once they had cooled, I just levelled them off by cutting off the dome with a serrated knife. I wrapped the cakes in plastic wrap and placed them in the fridge overnight until I was ready to mask the cake.

Saturday morning, the day of Tasha’s birthday, I made the swiss mousse, masked, and decorated the cake. This recipe is adapted from the recipe that I used at George Brown College. It has slightly more milk chocolate than the original. I think the reason that this mousse doesn’t get to sweet is mainly because of the fresh cream, but also because 1/3 of the chocolate used is dark chocolate.

Chocolate Cake with Swiss Chocolate Mousse

Yield: 1 two layer 8″ cake


  • I recipe chocolate cake (I used this one from A Spoonful of…)
  • 108 g Milk Chocolate Chips lightly chopped
  • 100g Dark Chocolate chopped (I used a bar of Cadbury Dark Chocolate)
  • 85g + 500g 35% Cream*

* Note: The cream is split into two quantities so that the first amount can be used for ganache!


  1. Add both chopped chocolates to a medium sized bowl
  2. Bring the first quantity of cream to a boil
  3. Once boiling, pour over chopped chocolate and allow to stand for 1-2 minutes
  4. Lightly whisk the chocolate together with the cream to create a ganache
  5. Allow the ganache to sit, stirring occasionally, until it has cooled to 40°F (If you don’t have a thermometer, just cool it until it feels about room temperature)
  6. Whip the second quantity of cream to semi-soft peaks
  7. Incorporate 1/3 of the whipped cream into the ganache using a spatula, trying not to incorporate too much air
  8. Now add the cream and ganache mixture into the bowl with the whipping cream. Combine using a whisk until you have a uniform appearance. Be careful not to overmix, as the mixture can split.
  9. Use the Swiss Mousse to mask your cake, adding a 1cm layer of mousse in the middle and any remaining mouse to decorate your cake how you like!

Here’s a look at how my cake came together:

I realized that I didn’t exactly have a turntable to mask the cake on, so I ended up just doing it on the cake stand and it actually turned out quite well! I made a little bit of a mess on the lip of the cake stand, but was able to just do a quick cleanup at the end and it looked just fine.

After the cake was masked, and I was happy with how it looked, I proceeded to decorate the cake. I had an image that I was trying to recreate for this cake, but I found that the Swiss Mousse isn’t great for intricate details, so maybe try and keep it more simple with your decorating. Alternately, some chocolate decoration would be great for a cake like this and would create a lot of visual interest!


I wasn’t entirely happy with how the piping came out, but it still made for a great tasting cake!

After the cake was decorated, I had the challenging task of getting it over to Ben and Tasha’s. I kept the cake in the fridge in order to firm up the mousse before I transported it, and I think that ended up being a good call. I ended up putting some toothpicks in the cake where they couldn’t be seen, and wrapped it in plastic wrap right on the cake stand. I then proceeded to walk right out the door and on the subway just holding the cake by the stand. Thankfully, I didn’t trip or get bumped into and the cake arrived in one piece!

As a bonus, if you have any of the Swiss Chocolate Mousse leftover, take the tops that you cut off of your cake and make a trifle with it!  I made trifle for Nick and myself a few days after I made the cake, and the leftovers were still so moist and the Swiss Mousse was in perfect condition.

Definitely give this cake and mousse combo a try, you won’t be dissapointed!

xo, tess.

0 responses to “Chocolate Cake with Swiss Chocolate Mousse”

  1. Garance says:

    This looks delicious! ?

  2. Terra Dawn says:

    Well….NOW I want chocolate cake. *sigh* Looks super tasty!!!!!!!

  3. This sounds yummy. Will have to make a double batch of the frosting - need to have some left over for the cake after I finish licking the licking the mixer and the bowl.