Marquise au Chocolat

A no-bake Marquise au Chocolat: dark chocolate and butter beaten with sugar, lightened with whipped egg whites folded in three additions, then chilled at least 4 hours (overnight is better) until it sets. An optional ganache and a dusting of cocoa powder finish it, sliced clean with a knife dipped in hot water between cuts.

Why You'll Love Marquise au Chocolat

The egg whites get folded into the chocolate base in three additions so the mousse doesn't deflate, and at least 4 hours in the fridge (overnight is better) is what sets it firm enough to slice. The hot knife trick, dipped in hot water and wiped dry between cuts, is what gives you clean edges instead of torn ones. The ganache and cocoa dusting are both optional; the marquise holds up rich and complete without them.

Tips and Tricks

• Room-temperature butter beats smoother and incorporates more evenly.
• Fold egg whites gently in three additions to maintain airiness - first addition loosens the mixture, final two preserve volume.
• Chilling overnight improves texture and deepens flavor as the mousse fully sets.
• The hot knife method is essential - cold knives drag and tear, hot knives glide through cleanly.
• If ganache is too thick, warm slightly to loosen; if too thin, let it cool and thicken before pouring.

Variations

• Add 1 tablespoon of Grand Marnier or rum to the chocolate mixture for depth.
• Fold in ¼ cup finely chopped toasted hazelnuts for texture.
• Replace coffee with espresso powder dissolved in 1 tablespoon water for stronger coffee flavor.

Substitutions

• Dark chocolate (70% cocoa) → semi-sweet chocolate (adjust sugar to taste, may need to reduce by 2 tbsp).
• Strong coffee → 1 tablespoon espresso powder dissolved in 2 tablespoon water.
• Heavy cream (for ganache) → full-fat coconut cream for dairy-free option.

Best served with

• Fresh raspberries or strawberries for brightness.
• Lightly sweetened whipped cream.
• A small glass of dessert wine or espresso.

How to Store Leftovers

Store covered in refrigerator for up to 3 days. The marquise holds well and flavor deepens over time.

Not recommended for freezing as texture may become grainy upon thawing.

Common Questions

Marquise au Chocolat | No-Bake French Chocolate Mousse

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A no-bake Marquise au Chocolat built on dark chocolate, butter, and precision folding. Rich, silky, and elegant, sliced clean with a warm knife once fully set.

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Prep Time 25 minutes mins

Active Time 30 minutes mins

Total Time 4 hours hrs 30 minutes mins

Servings: 8

Course: Dessert, French, No-Bake

Cuisine: French

Calories: 475

Ingredients Equipment Method Nutrition Notes

Ingredients

  

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• 200 g dark chocolate 70% cocoa
• 150 g unsalted butter softened
• 150 g granulated sugar
• 4 large eggs separated
• 2 tablespoon strong coffee
• 1 teaspoon vanilla extract
• 1 pinch salt
• 100 g dark chocolate 70% cocoa
• 100 ml heavy cream
• cocoa powder for dusting
• fresh berries for serving
• whipped cream for serving

Equipment

• Heatproof bowl
• Saucepan (for double boiler)
• Electric mixer or whisk
• Rubber spatula
• loaf pan (8x4 inch)
• Plastic wrap
• small saucepan (for ganache)
• Offset Spatula

Method

 

Prepare the Marquise

1. Melt the dark chocolate in a heatproof bowl set over a saucepan of simmering water, stirring occasionally until smooth. Remove from heat and let cool slightly.
2. In a large mixing bowl, beat softened butter and granulated sugar together until light and fluffy, about 3 minutes.
3. Add egg yolks one at a time, beating well after each addition.
4. Stir in melted chocolate, strong coffee, and vanilla extract until well combined.
5. In a separate clean bowl, add a pinch of salt to egg whites and beat until stiff peaks form.
6. Gently fold beaten egg whites into chocolate mixture in three additions, being careful not to deflate the mixture.
7. Line a loaf pan with plastic wrap, leaving enough overhang to cover the top.
8. Pour chocolate mixture into prepared pan, smoothing the top with a spatula.
9. Fold overhanging plastic wrap over the top to cover.
10. Refrigerate for at least 4 hours or overnight until firm.

Prepare the Ganache (optional)

1. Heat heavy cream in a small saucepan until it begins to simmer. Remove from heat.
2. Add chopped dark chocolate and let sit for 1 minute.
3. Stir until smooth and glossy. Let cool slightly.

To Plate

1. Remove marquise from refrigerator and unwrap plastic wrap.
2. Invert onto a serving platter and peel off plastic wrap completely.
3. If using ganache, pour over the top, allowing it to drip down the sides.
4. Dust with cocoa powder and garnish with fresh berries and whipped cream if desired.
5. Slice with a hot knife. Dip knife in hot water and wipe dry before each cut for clean slices.

Nutrition

Calories: 475kcalCarbohydrates: 36gProtein: 3gFat: 36gSaturated Fat: 22gPolyunsaturated Fat: 1gMonounsaturated Fat: 10gTrans Fat: 1gCholesterol: 56mgSodium: 13mgPotassium: 287mgFiber: 4gSugar: 28gVitamin A: 668IUVitamin C: 0.1mgCalcium: 40mgIron: 4mg

Notes

Storage: cover and refrigerate for up to 5 days, or freeze for up to a month wrapped tightly in plastic. Let it sit a few minutes at room temperature before slicing.

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