Best Chocolate Walnut Crumble Cake Recipe | Moist, Rich & Crunchy
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🍰 Introduction
Chocolate Hazelnut Mousse Cake is a heavenly dessert that blends the richness of dark chocolate with the nutty crunch of hazelnuts. This no-bake (or lightly baked) treat is perfect for birthdays, dinner parties, or when you want something fancy without the fuss of layered baking.
No baking needed (if using chilled crust)
Creamy mousse with a crunchy nut base
Elegant and festive presentation
Simple but luxurious
Easy to customize flavors
To make preparation simpler, we'll separate the ingredients into dry and wet sections.
1 cup roasted hazelnuts (for crust and garnish)
2 tablespoons cocoa powder
2 tablespoons powdered sugar
A pinch of salt
1 tablespoon instant coffee powder (optional, enhances flavor)
100g unsalted butter (melted – for crust)
200g dark chocolate (at least 70% cocoa)
1½ cups heavy whipping cream (cold)
¼ cup milk
¼ cup hazelnut spread (like Nutella)
1½ teaspoons gelatin (or agar-agar powder)
3 tablespoons water (to bloom gelatin)
Preheat your oven to 175°C (350°F). In a bowl, mix melted butter, sugar, eggs, cocoa powder, all-purpose flour, salt, and vanilla extract to form a thick brownie batter. Pour the batter into a round pan lined with parchment paper.
Place the pan in the preheated oven and bake for 20–25 minutes, or until the center is set and a toothpick comes out with moist crumbs. Avoid overbaking to keep it fudgy.
Once baked, remove the brownie base from the oven and let it cool completely at room temperature. This helps keep the ice cream layers firm and prevents them from melting. You can refrigerate it for faster cooling.
Slightly soften milk. Spread it evenly over the cooled brownie base using a spatula. Freeze for 30–45 minutes until firm.
Next, soften and spread a thick layer of dark chocolate ice cream on top of the first layer. Again, freeze for 30–45 minutes until firm.
Layer the softened white chocolate ice cream on top as the final finishing layer. Level it with a spatula and freeze the whole cake for at least 4–6 hours or overnight.
After the layers are fully set and firm, carefully take the cake out of the pan. Smooth any edges if needed, and return it to the freezer until ready to decorate or serve.
To elevate the decoration even further, try this next step:
Chill leftover ganache until thickened
Whip it into a fluffy frosting
Pipe swirls or borders on the cake edges
Once fully chilled, remove cake from springform pan.
Use a warm knife to loosen the edges.
Add piped frosting, chopped hazelnuts, or chocolate curls.
Dust lightly with cocoa powder if desired.
Use high-quality chocolate for deep flavor
Let chocolate cool before adding whipped cream
Whip cream to soft (not stiff) peaks
Chill cake between each step for best texture
Use a springform pan for easy removal
Add crushed Ferrero Rocher to the crust or topping
Add a splash of hazelnut liqueur to the mousse for a subtle, nutty flavor.
Use white chocolate for a lighter version
Replace hazelnuts with almonds or pecans if desired
Store it in the fridge with a cover and consume within four days for best freshness.
Freeze the cake without ganache for 2–3 weeks
Prepare a day ahead for best flavor and structure
Always serve chilled for best results
Serve cold with whipped cream or coffee
Pair with espresso, hazelnut latte, or red wine
Add a scoop of vanilla or hazelnut ice cream
Cut with a warm knife for clean slices
Q1. Can I skip gelatin?
Yes! Use agar-agar powder if you prefer a vegetarian version.
Q2. Can I make this cake without nuts?
You can substitute the hazelnuts with crushed cookies or a graham crust.
Q3. How do I get perfect slices?
For clean slices, warm the knife in hot water, then dry it before each cut.
Q4. Is this cake freezer-friendly?
Yes. Freeze before ganache and decorate after thawing.
Nutrient | Amount |
---|---|
Calories | 430 kcal |
Carbohydrates | 49 g |
Protein | 6 g |
Total Fat | 23 g |
Saturated Fat | 11 g |
Cholesterol | 60 mg |
Sodium | 225 mg |
Fiber | 3 g |
Sugars | 36 g |
Calcium | 65 mg |
Iron | 2.8 mg |
The Chocolate Hazelnut Mousse Cake is the kind of dessert that makes any occasion feel like a celebration. From its creamy layers to the crunchy hazelnut base and silky ganache top, it’s a guaranteed crowd-pleaser you’ll make again and again.
you can also enjoy triple chocolate ice cream cake and chocolate oreo cake.
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