Chocolate Hazelnut Brownies Recipe
If you are a true chocolate enthusiast, you are going to fall head over heels for these Chocolate Hazelnut Brownies. Imagine biting into a dense, fudgy square that melts softly in your mouth, with a perfect contrast between a slightly crisp top and a lush, gooey center. Toasted hazelnuts add the ideal nutty crunch, elevating the rich dark chocolate flavor to new heights. These brownies are straightforward to prepare yet so delightfully indulgent, perfect for sharing or savoring a quiet moment of pure chocolate bliss.

Ingredients You’ll Need
Gathering simple, high-quality ingredients is the secret to these incredible brownies. Each ingredient plays a vital role: the dark chocolate and butter create the luscious fudgy texture, sugar and eggs bind and sweeten the mixture, flour and cocoa powder provide structure and depth, and the hazelnuts bring a wonderful crunchy surprise.
- 200 g dark chocolate: Choose good-quality chocolate for intense, rich flavor and smooth texture.
- 150 g butter: Adds creaminess and helps create that perfect dense brownie base.
- 200 g sugar: Sweetens the batter and balances the bitterness of cocoa.
- 3 eggs: Provide moisture and structure, keeping brownies soft yet firm.
- 100 g flour: The essential dry ingredient that helps hold everything together.
- 50 g cocoa powder: Deepens the chocolate taste and adds richness without heaviness.
- 1/2 tsp salt: Enhances all the flavors and balances sweetness perfectly.
- 1/2 cup chopped hazelnuts: Toasted to perfection, these add a delightful crunch and nutty nuance.
How to Make Chocolate Hazelnut Brownies
Step 1: Prep and Heat
Start by preheating your oven to 180°C so it’s perfectly ready when your batter is done. This step is essential for an even bake and gorgeous brownie texture.
Step 2: Melt Chocolate and Butter
Gently melt your dark chocolate and butter together over low heat or in a double boiler, stirring frequently. This smooth mixture forms the base of your brownies and infuses them with luxurious flavor.
Step 3: Mix Eggs and Sugar
In a separate bowl, beat the eggs and sugar until the mixture is pale and slightly thickened. This whipping action is key to adding lightness to your dense brownies.
Step 4: Combine Chocolate with Egg Mixture
Carefully fold the melted chocolate and butter into the egg and sugar mix. Folding preserves air bubbles created while beating, helping keep your brownies soft inside.
Step 5: Add Dry Ingredients and Nuts
Sift in the flour, cocoa powder, and salt to avoid lumps and ensure an even texture. Then stir in the chopped hazelnuts, distributing that irresistible crunch throughout every bite.
Step 6: Bake to Perfection
Pour your batter into a prepared baking tin and bake for about 25–30 minutes. You’ll want the top to be set with a slight crisp while the center remains delectably soft and fudgy. A toothpick inserted should come out with a few moist crumbs for that perfect result.
How to Serve Chocolate Hazelnut Brownies

Garnishes
Simple garnishes can make these brownies even more irresistible. Sprinkle extra toasted hazelnuts or a dusting of cocoa powder on top for a rustic feel, or drizzle with melted chocolate for added indulgence.
Side Dishes
Pair your Chocolate Hazelnut Brownies with a scoop of vanilla ice cream or a dollop of whipped cream to balance the rich flavors. Fresh berries offer a refreshing contrast and brighten up the plate beautifully.
Creative Ways to Present
Think beyond the classic square cut! Try serving brownies as part of a decadent dessert platter alongside espresso or hot chocolate, or cut into bite-sized pieces on skewers for a fun party treat. Wrapping individual brownies in parchment paper tied with string also makes a charming homemade gift.
Make Ahead and Storage
Storing Leftovers
Keep your brownies fresh by storing them in an airtight container at room temperature. They will stay wonderfully soft and fudgy for up to 4 days, perfect for grabbing a quick sweet bite.
Freezing
You can freeze these brownies to enjoy later by wrapping them tightly in plastic wrap and placing them in a freezer-safe bag. They’ll keep well for up to three months; just thaw at room temperature before serving.
Reheating
If you want to enjoy a warm, melty slice after storage, pop your brownie squares in a microwave for about 15-20 seconds or briefly warm them in a low oven. This brings back that freshly baked feeling and intensifies the chocolate flavor.
FAQs
Can I use milk chocolate instead of dark chocolate?
Absolutely! Using milk chocolate will create a sweeter, lighter brownie, but the deep, bittersweet qualities of dark chocolate are what give these brownies their signature richness.
Do I have to toast the hazelnuts?
Toasting the hazelnuts enhances their flavor and crunch, making a noticeable difference. You can skip this step if short on time, but the taste won’t be quite as vibrant.
Can I substitute the butter for oil?
Butter adds flavor and richness that oil can’t quite match, so it’s best to stick with butter for these brownies to get that perfect texture and taste.
How do I know when my brownies are done?
Look for a slightly crisp top that springs back when lightly touched. A toothpick inserted in the center should come out with moist crumbs but not wet batter.
Can I make these brownies gluten-free?
Yes, simply swap the all-purpose flour for a gluten-free blend, ensuring it contains xanthan gum for the best texture. The brownies will still be just as fudgy and flavorful.
Final Thoughts
There’s something truly special about homemade Chocolate Hazelnut Brownies—their rich, fudgy center and crunchy nutty goodness make them impossible to resist. Once you try this recipe, you’ll keep coming back for the comforting chocolate hugs they offer. So gather your ingredients and dive into making these brownies; trust me, your taste buds will thank you endlessly.
