This dark chocolate mousse is light, airy, and deeply chocolatey, made from just eggs, cream, sugar, butter, and bittersweet chocolate.
It needs about 20 minutes of hands-on work plus a few hours in the refrigerator, and it looks impressive in small glasses with whipped cream and chocolate shavings on top. Gentle folding is the secret to the cloud-like texture.
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Why This Dark Chocolate Mousse Recipe Works
Whipping the egg whites and the cream separately builds two kinds of air, and folding them into the chocolate keeps that air in the mixture. The mousse sets light instead of dense.
Bittersweet chocolate with about 70% cocoa gives a rich flavor that is not too sweet, so a small glass feels satisfying. A little butter makes the melted chocolate smooth and glossy.
There is no oven and no stove, only a microwave for melting and a mixer for whipping. That makes it an easy make ahead dessert for dinner parties.
Ingredients for Dark Chocolate Mousse
- 3 large eggs, separated (about 2 oz each)
- 4 1/2 oz bittersweet baking chocolate, about 70% cocoa, chopped
- 2 tsp unsalted butter
- 1/2 cup heavy whipping cream, full fat
- 3 tbsp superfine sugar (or regular granulated sugar)
- Extra whipped cream, for topping
- Chocolate shavings, for garnish
Eggs. Separate them while cold, because cold yolks and whites separate cleanly. Use pasteurized eggs in the shell for extra peace of mind, since the mousse is not cooked.
Chocolate. Choose a good bar with about 70% cocoa and chop it finely so it melts quickly and evenly in the microwave.
Butter. Just 2 teaspoons adds sheen and helps the chocolate stay smooth as it cools.
Heavy cream. Use full fat cream so it whips to stiff peaks. A chilled bowl and chilled beaters speed things up.
Superfine sugar. It dissolves quickly into the whites. Regular granulated sugar works too, so just beat a little longer.
How to Make Dark Chocolate Mousse
1. Separate the eggs Crack the cold eggs one at a time, placing the whites in a large clean bowl and the yolks in a small bowl. Even a trace of yolk in the whites will keep them from whipping.
2. Melt the chocolate Place the chocolate and butter in a microwave safe bowl and heat in 30 second bursts, stirring in between, until smooth. Set aside until just warm to the touch.
3. Whisk the yolks Whisk the yolks until smooth, then stir them into the slightly cooled chocolate until glossy. The chocolate should be warm, not hot.
4. Whip the cream Beat the cream until stiff peaks form, stopping as soon as it holds its shape so it does not turn grainy.
5. Whip the whites Add the sugar to the whites and beat until firm, shiny peaks form.
6. Fold it together Fold a spoonful of whipped cream into the chocolate to loosen it, then gently fold in the rest of the cream and the whites in two additions, stopping when no streaks remain.
7. Chill and top Spoon the mousse into dessert glasses, cover, and refrigerate for at least 3 hours until set. Top with whipped cream and chocolate shavings before serving.
How to Serve Dark Chocolate Mousse
Serve the mousse chilled in small glasses or bowls, topped with extra whipped cream and chocolate shavings. It pairs well with fresh berries, and on a dessert table it sits nicely beside New York cheesecake, fudgy brownies, red velvet brownies, or a slice of brownie pie.
How to Store and Reheat Dark Chocolate Mousse
Cover the glasses with plastic wrap and refrigerate for up to 2 days, since the mousse contains uncooked eggs. Keep it chilled until you are ready to serve. Freezing is not recommended because the airy texture turns icy and dense.
Tips and Variations for Dark Chocolate Mousse
Cool the chocolate. Melted chocolate that is too hot can cook the yolks and make the mousse grainy, so let it cool until barely warm.
Use clean tools. Any grease on the bowl or beaters stops egg whites from whipping, so wipe them clean and dry.
Fold gently. Use a wide spatula and sweep from the bottom of the bowl to keep as much air as possible.
Chill long enough. Three hours gives a soft, spoonable set, and overnight gives a firmer texture.
Add flavor. A spoonful of strong coffee or a splash of vanilla extract deepens the chocolate flavor.
Pipe it. For a polished look, spoon the mousse into a piping bag and pipe it into the glasses.
Try other chocolate. Semi sweet works if you prefer a milder flavor, though you may want to cut the sugar slightly.
Handle eggs safely. Keep eggs refrigerated and wash your hands after cracking them, and see the Montana State University Extension egg fact sheet for general egg handling.
Frequently Asked Questions About Dark Chocolate Mousse
Can I make dark chocolate mousse ahead of time?
Yes, it actually benefits from a few hours of chilling, and it keeps well for up to 2 days in the refrigerator. Add the toppings just before serving.
Is dark chocolate mousse safe with raw eggs?
This mousse uses uncooked eggs, so choose pasteurized eggs in the shell and avoid serving it to young children, pregnant guests, older adults, or anyone with a weakened immune system.
Why is my dark chocolate mousse grainy?
The chocolate was probably too hot when the yolks went in, or it cooled and seized. Let it cool until barely warm, then stir in the yolks right away.
Can I use milk chocolate instead?
Milk chocolate is sweeter and softer, so reduce the sugar slightly and expect a lighter set.
Do I need an electric mixer?
A mixer makes whipping the cream and whites much faster, though a balloon whisk and some patience will also work.
Dark Chocolate Mousse with Whipped Cream
Equipment
- microwave-safe bowl
- Electric mixer
- Rubber spatula
- Dessert glasses
Ingredients
Main Ingredients
- 3 large eggs separated
- 4 ½ oz bittersweet baking chocolate about 70% cocoa, chopped
- 2 tsp unsalted butter
- ½ cup heavy whipping cream full fat
- 3 tbsp superfine sugar or regular granulated sugar
- ¼ cup whipped cream for topping
- 1 tbsp chocolate shavings for garnish
Instructions
Cooking
- Separate. With cold eggs, drop the whites into a clean, dry large bowl and the yolks into a small one.
- Melt. Microwave the chopped chocolate with the butter for 30 seconds at a time, stirring until smooth, about 2 minutes. Let it cool a few minutes.
- Add the yolks. Beat the yolks, then stir them into the warm chocolate until shiny.
- Whip the cream. Beat the cream to stiff peaks, about 2 minutes.
- Whip the whites. Beat the whites while adding the sugar until they hold firm, glossy peaks, about 3 minutes.
- Fold. Lighten the chocolate with a spoonful of cream, then fold in the remaining cream and whites until no white streaks show.
- Set. Divide among 4 glasses, cover, and chill for 3 hours. Garnish with cream and shavings.
