Chocolate Mousse Delight

Featured in Sweet Treats for Any Day.

This layered dessert brings together chocolate at its best. Start with a tender cake enriched with cocoa and a hint of coffee, then soak it for extra depth. The star element is the fluffy mousse made with a mix of dark and milk chocolates, cream, and delicate meringue for that light-as-air texture. A luscious ganache coats the entire piece, adding a gorgeous drip effect. Each bite is a mix of soft cake, creamy mousse, and glossy ganache for that perfect chocolate-filled experience.
Una donna con un cappello a coda di cavallo e un vestito nero.
Updated on Thu, 10 Apr 2025 19:37:37 GMT
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Chocolate Mousse Delight | kylierecipes.com

I've turned this decadent dessert into a comprehensive walkthrough for making the perfect chocolate indulgence. This three-layered chocolate sensation merges a soft chocolate base, velvety mousse interior, and shiny chocolate coating to craft a mind-blowing sweet treat.

After whipping up tons of mousse desserts over the years, I think this one nails the sweet spot between decadence and fluffiness. The first time I brought this out after dinner, my friends thought I'd snuck out to a fancy bakery.

Key Components and Shopping Advice

  • Dark Chocolate: Go for good 70% cocoa bars for bold taste. Look for those shiny marks showing proper manufacturing.
  • Milk Chocolate: Stick with trusted names for better melting and taste results.
  • Dutch Process Cocoa: Gives you a blacker color and fuller chocolate kick than regular cocoa powder.
  • Fresh Eggs: Split them up when they're still cold but let them warm up before using.
  • Heavy Cream: Don't settle for anything under 36% fat or it won't whip right.

Step-by-Step Preparation Guide

Step 1: Getting the Base Just Right
Double check your oven's real temp before you start. Mix all your dry stuff really well to break up cocoa clumps. Put the hot coffee in last to wake up those cocoa flavors. Pull it out when a toothpick comes out with just a tiny bit of stickiness.
Step 2: Nailing the Mousse
Go slow when melting your chocolate so it doesn't get grainy. Warm those egg yolks carefully so they don't turn into breakfast. Make sure the gelatin completely dissolves in the warm cream. Stir with a light touch to keep all those air bubbles intact.
Step 3: Perfecting the Top Layer
Cut your chocolate into same-sized bits for smooth melting. Warm the cream just until it starts to bubble around the edges. Let everything sit untouched for 3 minutes. Pour at the sweet spot temp for those gorgeous drips down the sides.
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Chocolate Mousse Cake | kylierecipes.com

I spent years watching my grandma work her magic with chocolate treats, and she always said taking your time makes all the difference. This isn't a quick dessert, but each step builds amazing flavor that's totally worth the effort.

The real magic behind this cake comes down to watching your temperatures. I've learned that letting each section cool properly gives you those distinct layers that make every bite interesting.

Chocolate Mousse Cake Pin it
Chocolate Mousse Cake | kylierecipes.com

This has become my go-to wow dessert for birthdays and holidays. Combining these three different chocolate techniques creates something that chocolate fans can't stop talking about.

Frequently Asked Questions

→ What does acetate or a cake collar do?
It lets you build the mousse layer with neat, smooth edges.
→ Can I prepare it in advance?
Sure, it keeps well in the fridge for up to two days.
→ Why is coffee added to the cake?
It boosts the chocolate taste and keeps the cake moist, no coffee flavor detected.
→ Can I leave out the gelatin?
You can’t skip it—it’s needed to set the mousse so it stays firm when sliced.
→ How long can it last?
Chill in the fridge up to five days, though it’s best enjoyed within three.

Mousse Cake Layers

A triple-layer treat with a moist cake, airy mousse, and smooth ganache to top it off.

Prep Time
250 Minutes
Cook Time
120 Minutes
Total Time
370 Minutes
By: Kylie

Category: Desserts

Difficulty: Difficult

Cuisine: French

Yield: 10 Servings

Dietary: Vegetarian

Ingredients

→ Chocolate Cake

01 1/2 cup (120g) hot brewed coffee
02 1/2 cup (120g) sour cream
03 1 teaspoon vanilla extract
04 2 large eggs
05 1/2 cup (112g) vegetable oil or olive oil
06 1/2 teaspoon baking powder
07 3/4 cup (100g) packed dark brown sugar
08 1/2 cup (100g) finely ground granulated sugar
09 1 teaspoon baking soda
10 1/4 teaspoon kosher salt
11 2 tablespoons cornstarch
12 1/4 cup (25g) cocoa powder (dutch process)
13 3/4 cup (95g) multipurpose flour

→ Cake Soak

14 1 tablespoon cocoa powder (dutch process)
15 1/2 cup (120g) hot brewed coffee

→ Chocolate Mousse

16 3/4 cup heavy cream, plus 1 cup more, divided
17 1 1/2 teaspoons unflavored gelatin
18 3 tablespoons water
19 3 large eggs, yolks and whites separated
20 1/4 cup (50g) fine granulated sugar
21 7 oz of milk chocolate, broken into pieces
22 7 oz of 70% dark chocolate, chopped into bits
23 1/2 teaspoon tartar cream

→ Ganache

24 3/4 cup (180g) heavy cream
25 6 oz 70% dark chocolate, broken into pieces

Instructions

Step 01

Combine the dry goods in one bowl; mix the wet ingredients in another. Then gently stir both together and bake in a springform pan at 350°F for around 25-30 minutes.

Step 02

Flatten the cooled cake. Then use parchment paper or acetate to line your pan and pour the coffee mixture evenly over the cake.

Step 03

Melt the chocolates and blend them with the egg yolks. Mix that with the gelatin and cream, then fold in whipped cream and meringue until smooth.

Step 04

Spread the mousse over the cake evenly. Let it chill for a few hours or leave it overnight.

Step 05

Prepare ganache, pour it over the top once the mousse is firm, and cool it for half an hour before serving.

Notes

  1. You can swap in gluten-free all-purpose flour instead.
  2. Acetate can be replaced with parchment paper.
  3. It tastes better if chilled overnight.

Tools You'll Need

  • 9-inch springform pan
  • Cake collars (acetate)
  • A hand or stand mixer
  • Double boiler or similar setup

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy.
  • Uses eggs.
  • Has wheat ingredients.