French Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. 
Serving Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Mousse au Chocolat
Intensely dark chocolate folded into clouds of whipped egg whites — the result is impossibly light yet deeply, richly satisfying.
Contains common allergens
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Instructions
6 steps- 1
Set a heatproof bowl over a saucepan of gently simmering water (bain-marie). Melt the dark chocolate and butter together, stirring until smooth and glossy. Remove from heat and let cool slightly.
- 2
Whisk the egg yolks and vanilla extract into the melted chocolate mixture until well combined.
- 3
In a separate, impeccably clean metal or glass bowl, whip the egg whites with a pinch of salt until soft peaks form.
- 4
Gradually sprinkle in the sugar while continuously whipping until you achieve stiff, glossy peaks.
- 5
Briskly whisk one-third of the egg whites into the chocolate mixture to lighten it.
- 6
Extremely gently fold the remaining egg whites into the chocolate in two additions, taking care not to deflate the mixture. Spoon into glasses and chill for at least 4 hours until set.
Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Listahan Family Score™
70/100
Good fit for most families
Score reflects how well this recipe fits a typical busy household. In the app, your Family Score is personalized to your household's allergens, kids, and pantry.
Nutrition
per serving225
Calories
5 g
Protein
19 g
Carbs
14 g
Fat
Estimated per serving. Actual values depend on the brands and portions you use.
Listahan cooking guide
Chef notes & practical guide
Technique notes, ingredient swaps, serve-alongside ideas, storage guidance, and equipment for this recipe.
Cultural context
French mousse au chocolat gets its lift not from cream alone but from whipped egg whites folded into a melted chocolate and yolk base, a technique that trades gelatin or cornstarch for trapped air as the only thing holding the texture together.
Listahan note
This version cools the melted chocolate to just warm before the yolks go in, and folds in the whipped whites gradually, since either step done wrong scrambles the eggs or deflates the mousse.
Technique cues
- Chocolate melted with butter needs to cool to just warm, not hot, before egg yolks are stirred in, since hot chocolate can scramble the yolks on contact.
- Whipping the egg whites to soft, glossy peaks rather than stiff, dry ones keeps them easy to fold in without collapsing against the denser chocolate base.
- Folding the whites into the chocolate in three additions, lightening the base with the first small portion before adding the rest, keeps the mousse airy instead of deflating it.
- The mousse needs a real chill, several hours at minimum, for its structure to set; served right after mixing, it tastes closer to pudding than mousse.
Kitchen flow
- Parallel prep
- While Mousse au Chocolat is in the oven, measure out any garnish or topping — like the high-quality dark chocolate — so it's ready the moment the bake finishes cooling. The simmer step is what sets the pace here.
- Make-ahead
- Mousse au Chocolat's dough or batter (built around high-quality dark chocolate) can usually be made a day ahead and refrigerated, then baked fresh — many doughs actually improve with an overnight rest. The simmer step is what sets the pace here.
- Leftover move
- Leftover Mousse au Chocolat freezes well — wrap individual portions tightly and thaw at room temperature, or crumble it over ice cream for a quick second life. This one leans on the high-quality dark chocolate. Plan around the simmer; that's the slow part.
- Cleanup rhythm
- Soak the mixing bowl and beaters for Mousse au Chocolat right away — sugar and butter residue hardens fast once it cools. This one leans on the high-quality dark chocolate. The simmer step is what sets the pace here.
Ingredient brief
Role, handling, and swap guidance for each key ingredient.
7 oz high-quality dark chocolate (70% cacao
Sweetness and aroma
Purpose: oz high-quality dark chocolate (70% cacao adds aroma, sweetness, or warmth without needing extra garnish.
Handling: Prep before heat is high so the cooking step can move without rushing.
Adaptation: Use the closest fresh equivalent and expect a modest shift in flavor or texture.
finely chopped)
Flavor support
Purpose: finely chopped) supports the balance of Mousse au Chocolat and should taste integrated.
Handling: Prep before heat is high so the cooking step can move without rushing.
Adaptation: Use the closest fresh equivalent and expect a modest shift in flavor or texture.
3 tbsp unsalted butter
Richness and texture
Purpose: tbsp unsalted butter rounds the texture and helps the dish feel complete.
Handling: Prep before heat is high so the cooking step can move without rushing.
Adaptation: Use unsweetened dairy-free alternatives only where they still provide enough fat and body.
4 large eggs
Main protein or body
Purpose: large eggs gives Mousse au Chocolat its main substance and carries the seasoning.
Handling: Prep before heat is high so the cooking step can move without rushing.
Adaptation: Use an egg-free substitute only when binding or glazing is not the main structure.
2 tbsp granulated sugar
Sweetness and aroma
Purpose: tbsp granulated sugar adds aroma, sweetness, or warmth without needing extra garnish.
Handling: Measure before heating and break up clumps so the mix distributes evenly.
Adaptation: Use the closest fresh equivalent and expect a modest shift in flavor or texture.
Technique notes
- Use chocolate around seventy percent cacao so the mousse reads as rich rather than overly sweet, since the eggs and sugar already add plenty of body.
- Spoon or pipe the mousse into individual glasses right after folding, before it has a chance to lose air sitting in one large bowl.
- A light dusting of cocoa powder or a few shaved curls right before serving is enough garnish, the mousse itself is the main event.
Ingredient swaps
- Dairy-free direction
- Swap the unsalted butter for a neutral dairy-free butter and a full-fat plant milk (oat or coconut give the closest richness) — the texture shifts slightly but the dish holds together. This one leans on the high-quality dark chocolate.
- Egg-aware direction
- Replace the eggs with a flax or chia egg (1 tbsp ground seed + 3 tbsp water, rested 5 minutes) for binding, best when eggs are there for binding rather than structure or rise. This one leans on the high-quality dark chocolate.
- Lower-sodium direction
- Salt in stages instead of all at once, tasting as you go — you'll likely need less than the full amount. This one leans on the high-quality dark chocolate.
- Weeknight shortcut
- Mix and chill the batter or mix-ins up to a day ahead so the night-of step is just baking, not mixing. This one leans on the high-quality dark chocolate.
Serve alongside
- Fresh berries
- Citrus fruit salad
- Mint leaves
- Black coffee
- Hot tea
- Sparkling water with lemon
Serving suggestions only — check pairings for your household's allergens.
Storage & reheating
- Store covered for 3 to 4 days, refrigerated when dairy, eggs, custard, or fresh fruit are involved.
- Reheat gently only when warmth improves the texture.
- Freeze sturdy baked portions up to 2 months; avoid freezing delicate fresh toppings.
Equipment
- Mixing bowls
- Baking dish or pan
- Cooling rack
Make this household-aware
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Plan it in Listahan
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