Chocolate Hazelnut Truffle Bars

Name: Chocolate Hazelnut Truffle Bars
Prep time: 20 min
Cook time: 15 min
Total time: 35 min
Yield: 12 bars
Ingredients: 200g digestive biscuits, crushed; 100g unsalted butter, melted; 50g cocoa powder; 300g dark chocolate, chopped; 200ml heavy cream; 100g ground hazelnuts; 50g icing sugar; 1 tsp vanilla extract; Chopped hazelnuts; Cocoa powder

Highlighted under: Classic Inspiration

I adore making Chocolate Hazelnut Truffle Bars in my kitchen; each bite is a heavenly morsel that combines rich chocolate and crunchy hazelnuts. The creamy filling is simple to prepare yet indulgent, turning an ordinary dessert into a luxurious treat. When I prepare these bars, I love how the aroma of melted chocolate fills the air, making it impossible to resist sampling the mixture. It’s the ideal way to satisfy a sweet tooth while impressing family and friends with something a bit special.

Created by

Nell Abernathy

Last updated on 2026-01-13T03:21:36.364Z

While experimenting with various dessert recipes, I stumbled upon the idea of combining chocolate and hazelnuts, which turned out to be a match made in heaven. The process of creating these truffle bars is a delight; it starts with melting chocolate, followed by incorporating ground hazelnuts for that rich texture. Each layer develops a distinct flavor that beautifully complements the others, and I’ve found that letting them chill overnight really enhances the overall taste.

I always recommend using high-quality chocolate for the best results. I’ve tried both milk and dark chocolate, and while they each create a unique flavor, dark chocolate lends a richer, more sophisticated feel. I also like to sprinkle crushed hazelnuts on top before chilling, which not only tastes amazing but adds a lovely visual appeal to the finished bars.

        Why You Will Love This Recipe
        Rich chocolate flavor paired with crunchy hazelnuts
Creamy texture that melts in your mouth
Perfect for celebrations or as a sweet indulgence

      

Understanding the Ingredients

The base of these Chocolate Hazelnut Truffle Bars is formulated with digestive biscuits, unsalted butter, and cocoa powder. Digestive biscuits provide a sturdy foundation with a hint of sweetness and texture, while the unsalted butter adds richness and binds the mixture together. The cocoa powder intensifies the chocolate flavor of the base, making each bite more decadent. If you prefer a different texture, graham crackers or Oreos can serve as excellent substitutes for the digestive biscuits.

For the truffle filling, the quality of dark chocolate plays a crucial role. Opt for a high-percentage chocolate (70% or higher) to achieve a rich and intense flavor. The heavy cream is essential, as it creates the silky texture that defines truffles. If you need a dairy-free option, you can use coconut cream instead; just ensure it’s refrigerated beforehand to maintain a thick consistency. Ground hazelnuts contribute to the nuttiness that complements the chocolate, enhancing the overall flavor profile.

Perfecting the Technique

When preparing the truffle filling, gently heat the cream just until it simmers, avoiding boiling to prevent scorching. Once you remove it from the heat and add the chocolate, stir continuously until the mixture is glossy and smooth. If your chocolate doesn’t melt completely, placing the saucepan back on low heat while stirring can salvage the mixture. This technique ensures an even, creamy filling that will set beautifully once chilled.

After pouring the filling over the chilled biscuit base, allow the entire dish to chill for a minimum of 4 hours. This duration is essential to achieve the right consistency; a longer chill time of 6 to 8 hours can further enhance the firmness and texture. When dusting the bars with cocoa powder or hazelnuts, do this just before serving to maintain the visual appeal and prevent any sogginess.

Ingredients

For the Base:

200g digestive biscuits, crushed
100g unsalted butter, melted
50g cocoa powder

For the Truffle Filling:

300g dark chocolate, chopped
200ml heavy cream
100g ground hazelnuts
50g icing sugar
1 tsp vanilla extract

For Garnishing:

Chopped hazelnuts
Cocoa powder

Instructions

Prepare the Base

In a mixing bowl, combine the crushed digestive biscuits, melted butter, and cocoa powder until fully incorporated. Press the mixture into the bottom of a lined baking dish to form a compact base. Place it in the fridge to set while you prepare the filling.

Make the Truffle Filling

In a saucepan, heat the heavy cream over medium heat until it begins to simmer. Remove from heat and add the chopped dark chocolate, stirring until melted and smooth. Mix in ground hazelnuts, icing sugar, and vanilla extract. Allow this mixture to cool slightly before pouring it over the chilled biscuit base.

Chill and Garnish

Let the truffle bars chill in the refrigerator for at least 4 hours, or until set. Once firm, remove from the dish, and dust with cocoa powder and chopped hazelnuts before slicing into bars.

Pro Tips

For an extra touch of elegance, consider drizzling melted chocolate over the sliced bars before serving.

Storage and Make-Ahead Tips

These Chocolate Hazelnut Truffle Bars can be prepared in advance, making them a convenient option for gatherings or special occasions. Once set, store the bars in an airtight container in the fridge for up to one week. For longer storage, wrap the bars individually in plastic wrap and place them in a freezer-safe container; they can last in the freezer for up to three months. Remember to allow them to thaw in the refrigerator for several hours before serving.

If you're planning to serve these bars at a later date, consider holding off on the garnishing until just before serving. This ensures that the chopped hazelnuts maintain their crunch and the cocoa powder doesn’t dull. It's also a great opportunity to customize the toppings; try varying the nuts or even using crushed freeze-dried fruits for a pop of color and flavor.

Serving Suggestions

When it comes to serving these truffle bars, presentation can transform the experience. Cut them into small squares or rectangles and serve on a decorative platter, perhaps with an array of complementary toppings like fresh berries or a drizzle of melted chocolate. A dusting of sea salt over the top can also enhance the flavor by balancing the sweetness.

For an elegant twist, pair these bars with a glass of full-bodied red wine or a rich coffee. If serving at a gathering, consider making mini versions in a muffin tin for individual servings, which are perfect for guests to enjoy without any fuss. Experimenting with flavors, like adding a hint of espresso to the truffle filling, can also provide a delightful variation to the classic recipe.

Questions About Recipes

→ Can I use milk chocolate instead of dark chocolate?

Yes, milk chocolate will create a sweeter flavor. Adjust sugar based on your preference.

→ How should I store the truffle bars?

Store them in an airtight container in the refrigerator for up to a week.

→ Can I use nuts other than hazelnuts?

Absolutely! Almonds or walnuts can work well as substitutes.

→ Is there a way to make these bars gluten-free?

Yes, you can use gluten-free biscuits to make the base.