Hazelnut Crunch Cake With Mascarpone and Chocolate

The memory of this cake is intertwined with a crisp autumn evening, a cozy kitchen filled with laughter, and the excited chatter of friends gathered for a spontaneous dessert night. The aroma of toasted hazelnuts mingled with the rich scent of chocolate, creating an irresistible invitation. It wasn’t just the flavors that captivated me, but the pure joy of sharing something so decadent and unexpected – a “box cake” elevated to extraordinary heights. It was a reminder that sometimes, the simplest things, with a touch of creativity, can create the most lasting memories.

Recipe Overview

• Prep Time: 30 minutes
• Cook Time: 30-35 minutes (cake) + 8 minutes (caramel)
• Total Time: 1 hour 45 minutes (includes cooling)
• Servings: 8
• Yield: 1 Cake
• Dietary Type: Not specified, contains dairy, eggs, and gluten

Ingredients

CAKE

• 18 1/4 ounces dark fudge cake mix (Duncan Hines recommended)
• 3 eggs
• 1/2 cup vegetable oil
• 1 1/3 cups water

CRUNCH

• 1 cup (about 4 1/2 ounces) hazelnuts, toasted and skinned
• 2/3 cup sugar
• 1/3 cup water

FILLING

• 16 ounces mascarpone cheese, room temperature
• 1 cup cream
• 3/4 cup powdered sugar
• 1 teaspoon vanilla extract

TOPPING

• 1/4 cup bittersweet chocolate chips
• 1 tablespoon sugar
• 1 teaspoon orange zest

Equipment Needed

• 2 (8-inch) cake pans
• Butter
• Flour
• Wire rack
• Parchment paper
• Small saucepan
• Baking sheet
• Refrigerator
• Cutting board (or suitable surface for pounding)
• Large mixing bowl
• Electric mixer
• Food processor

Instructions

1. Preheat your oven to 350º F (175°C). This is a crucial step to ensure even baking.

2. Butter and flour 2 (8-inch) cake pans. This prevents the cakes from sticking, ensuring easy removal and a clean presentation. Be generous with the butter, and dust thoroughly with flour, tapping out any excess.

3. Prepare the cake mix according to package instructions. Follow the instructions precisely as they will guide you to create the perfect base for this exquisite cake.

4. Divide the batter evenly between the 2 cake pans and bake according to package instructions. Baking times can vary depending on your oven, so start checking for doneness a few minutes before the suggested time. A toothpick inserted into the center should come out clean, or with just a few moist crumbs clinging to it.

5. Remove the cakes from the oven and let cool on a wire rack. Cooling completely is essential for easy handling and frosting. Allow them to cool in the pans for about 10 minutes before inverting them onto the wire rack to cool completely.

6. While the cakes are cooling, let’s move on to the hazelnut crunch. Place the toasted nuts close together in a single layer on a parchment-lined baking sheet. Make sure they are evenly distributed to ensure consistent caramelization.

7. In a small saucepan over medium-high heat, combine the sugar and water. This is the beginning of your delicious caramel.

8. Stir the sugar mixture until dissolved. This prevents the sugar from crystallizing later.

9. Bring the mixture to a boil and let cook until the sugar is light brown, about 8 minutes. Watch the mixture carefully, as it can burn quickly. The color should be a rich amber. A candy thermometer is helpful here; aim for 338°F (170°C).

10. Let the bubbles subside, then pour the caramelized sugar evenly over the nuts. Be careful, as the caramelized sugar is extremely hot and can cause burns.

11. Place the baking sheet in the refrigerator and let the sugar nut mixture cool until hard, about 30 minutes. This will solidify the caramel, making it brittle and easy to break into pieces.

12. Once the sugar nut mixture is hard and cool, top with another piece of parchment paper and pound into small pieces. Alternatively, you can place the sugar nut mixture on a cutting board and cut into small pieces. Set aside. The size of the pieces is up to you – some larger pieces add texture, while finer pieces distribute the flavor more evenly.

13. Now, let’s prepare the mascarpone filling. In a large mixing bowl, put the mascarpone cheese, cream, powdered sugar, and vanilla extract. Ensure the mascarpone cheese is at room temperature to prevent lumps in the filling.

14. Using an electric mixer, whip the cream mixture to soft peaks. Be careful not to overwhip, as the mascarpone can become grainy. Soft peaks should form when you lift the beaters from the mixture.

15. Fold the crunch mixture into the whipped cream. Gently fold to avoid deflating the whipped cream. This incorporates the delightful crunch into the creamy filling.

16. Finally, let’s prepare the chocolate topping. Place the chocolate, sugar, and zest in a food processor.

17. Process the mixture until the chocolate is finely ground. This creates a fragrant and flavorful chocolate dust.

18. Assemble the cake! Put 1 cake layer on a serving plate.

19. Top with 1-inch of the whipped cream crunch mixture. Spread evenly.

20. Top with the second layer of cake and continue frosting the entire cake with the remaining whipped cream crunch mixture.

21. Sprinkle the top and sides of the cake with the ground chocolate.

22. Serve & Enjoy!

Expert Tips & Tricks

• Toasting the hazelnuts: Don’t skip this step! It intensifies their flavor. Spread them on a baking sheet and bake at 350°F (175°C) for 10-12 minutes, or until fragrant and the skins start to crack. Rub them in a clean kitchen towel to remove the skins while they are still warm.
• Preventing a soggy cake: If your cake layers seem slightly dry, brush them lightly with a simple syrup (equal parts water and sugar, heated until the sugar dissolves) before frosting.
• Mascarpone consistency: If your mascarpone cheese is too thick, beat it briefly on its own before adding the other filling ingredients to loosen it up.
• Chocolate shavings: For a more elegant topping, use a vegetable peeler to create chocolate shavings from a bar of good-quality bittersweet chocolate.
• Make-ahead tip: The cake layers and hazelnut crunch can be made a day in advance. Store the cake layers well-wrapped at room temperature, and the crunch in an airtight container. Assemble the cake a few hours before serving for the best flavor and texture.

Serving & Storage Suggestions

Serve this Hazelnut Crunch Cake chilled or at room temperature. For an extra touch, accompany each slice with a scoop of vanilla ice cream or a dollop of whipped cream.

Leftovers should be stored in an airtight container in the refrigerator for up to 3 days. The cake is best enjoyed within this timeframe, as the mascarpone filling can soften over time. Freezing is not recommended, as it can affect the texture of the mascarpone and the crunch.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	754.6 kcal	N/A
Calories from Fat	424 g	56%
Total Fat	47.2 g	72%
Saturated Fat	12.3 g	61%
Cholesterol	102.9 mg	34%
Sodium	574.2 mg	23%
Total Carbohydrate	82 g	27%
Dietary Fiber	3.9 g	15%
Sugars	55 g	219%
Protein	9.9 g	19%

Note: Nutritional information is an estimate and can vary based on specific ingredients and portion sizes.

Variations & Substitutions

• Gluten-Free: Use a gluten-free dark fudge cake mix. Check the labels of all other ingredients to ensure they are also gluten-free.
• Nut-Free: Substitute the hazelnuts with toasted sunflower seeds or chopped pretzels for a similar crunch.
• Chocolate Cake Alternative: A Devil’s Food or chocolate sour cream cake mix works beautifully as well.
• Liqueur Infusion: Add a tablespoon or two of hazelnut liqueur (such as Frangelico) or coffee liqueur (such as Kahlua) to the mascarpone filling for an extra layer of flavor.
• Citrus Boost: Enhance the orange zest in the topping with a bit of lemon or grapefruit zest for a different dimension.

FAQs (Frequently Asked Questions)

Q: Can I use pre-ground hazelnuts instead of toasting and skinning them myself?
A: While you can, toasting and skinning them yourself provides a far superior flavor and aroma. The process isn’t difficult and greatly enhances the cake.

Q: What if I can’t find mascarpone cheese?
A: Cream cheese can be used as a substitute, but it will have a tangier flavor. If using cream cheese, be sure to use the full-fat version and allow it to soften completely before whipping.

Q: Can I make the hazelnut crunch ahead of time?
A: Absolutely! The hazelnut crunch can be made up to a few days in advance and stored in an airtight container at room temperature.

Q: My caramel burned – what do I do?
A: Start over! Burned caramel has a bitter taste that will ruin the entire cake. Pay close attention to the color of the caramelizing sugar, and remove it from the heat as soon as it reaches a light amber color.

Q: How do I prevent the cake layers from sticking to the pans?
A: Butter and flour the pans thoroughly, making sure to get into all the corners. You can also use parchment paper rounds on the bottom of the pans for extra insurance.

Final Thoughts

This Hazelnut Crunch Cake with Mascarpone and Chocolate is more than just a dessert; it’s an experience. It’s the kind of cake that evokes smiles, sparks conversation, and leaves a lasting impression. Whether you’re celebrating a special occasion or simply want to treat yourself and loved ones, I encourage you to give this recipe a try. The combination of rich chocolate, creamy mascarpone, and crunchy hazelnuts is simply irresistible. Don’t be afraid to experiment with variations and make it your own. And most importantly, share it with people you care about – because a cake this good is meant to be enjoyed together. Bon appétit!