Chocolate Hazelnut Brownies

Highlighted under: Oven Ideas

I absolutely love making these Chocolate Hazelnut Brownies because they combine my two favorite ingredients: rich chocolate and crunchy hazelnuts. The texture is incredibly satisfying, with a fudgy interior that contrasts beautifully with the nuttiness from the hazelnuts. Every bite is a delightful experience, and the best part is how quick they are to whip up. Whether I'm enjoying them as an afternoon treat or serving them at a gathering, these brownies always impress and leave everyone craving more.

Etta Langton

Created by

Etta Langton

Last updated on 2026-01-12T07:53:35.011Z

When I first baked these brownies, I wasn't sure how the hazelnuts would work with the chocolate. However, after testing various ratios, I found that adding toasted hazelnuts made all the difference! Their buttery flavor complements the dark chocolate perfectly, creating an irresistible taste.

Another trick I've learned is to use quality chocolate for melting, as it enhances the overall flavor of the brownies. Using both melted chocolate and cocoa powder provides a depth of chocolatey goodness that is hard to resist. Once you try these, they might just become your go-to dessert!

Why You'll Love These Brownies

  • Decadent chocolate flavor with a hint of nuttiness
  • Fudgy texture that satisfies any chocolate craving
  • Quick and easy to make, perfect for last-minute gatherings

Mastering the Brownie Texture

Achieving the perfect fudgy texture in brownies hinges on the balance of ingredients and baking time. The combination of semi-sweet chocolate chips and unsalted butter creates a rich base that gives these brownies their signature chewiness. Make sure not to overbake them; you want a toothpick inserted in the center to come out with a few moist crumbs. If it’s clean, you've likely gone too far, and the brownies may become dry.

Another key tip is to let the melted chocolate and butter mixture cool slightly before adding the eggs. This prevents them from cooking in the heat, ensuring a velvety batter. Plus, when mixing, be gentle—overmixing can incorporate too much air, leading to a cake-like texture instead of the desired fudgy consistency.

Hazelnuts: A Flavorful Addition

Toasting the hazelnuts before adding them to the batter is crucial for maximizing their flavor. Toasting brings out their natural oils and deepens their taste; aim for a light golden color, which usually takes about 8-10 minutes in a 350°F (175°C) oven. Once toasted, chop them roughly; this allows for both flavor infusions and a satisfying crunch in each bite.

If hazelnuts aren’t available, you can substitute them with walnuts or almonds, but keep in mind that the overall flavor profile will shift slightly. If you’re making these brownies for someone with nut allergies, consider using chocolate chips infused with hints of sea salt or olive oil to enhance the overall depth without the nuts.

Storing and Serving Suggestions

Once your brownies have cooled and been cut into squares, they can be stored in an airtight container at room temperature for up to four days—they often taste even better the next day as the flavors meld together. For longer storage, refrigerate them for up to a week or freeze for up to three months. Just make sure to wrap them tightly in plastic wrap before placing them in a freezer-safe container to prevent freezer burn.

Serving these brownies can be as simple or elaborate as you desire. For a decadent touch, top warm brownies with a scoop of vanilla ice cream and a drizzle of melted chocolate or caramel sauce. Alternatively, serve them with a dusting of powdered sugar for a touch of elegance. My personal favorite is to pair them with fresh berries for a delightful contrast against the richness of the chocolate.

Ingredients

For the Brownies

  • 1 cup (180g) semisweet chocolate chips
  • 1/2 cup (115g) unsalted butter
  • 3/4 cup (150g) granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1/2 cup (65g) all-purpose flour
  • 1/4 cup (25g) cocoa powder
  • 1/4 teaspoon salt
  • 1 cup (150g) toasted hazelnuts, chopped

Instructions

Preheat and Prepare

Preheat your oven to 350°F (175°C) and line an 8x8 inch (20x20 cm) baking dish with parchment paper, leaving some overhang for easy removal.

Melt Chocolate and Butter

In a medium saucepan over low heat, melt the chocolate chips and butter together, stirring continuously until smooth. Remove from heat and let cool slightly.

Mix Ingredients

In a large bowl, combine the sugar with the melted chocolate mixture. Stir in the eggs one at a time, mixing well after each addition. Add the vanilla extract.

Add Dry Ingredients

Sift together the flour, cocoa powder, and salt, then fold them into the chocolate mixture until just combined. Finally, stir in the chopped hazelnuts.

Bake

Pour the batter into the prepared baking dish and spread it evenly. Bake in the preheated oven for about 25 minutes, or until a toothpick inserted in the center comes out with moist crumbs.

Cool and Serve

Allow the brownies to cool in the dish for at least 10 minutes before lifting them out using the parchment overhang. Slice into squares and enjoy!

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Pro Tips

  • For an extra layer of flavor, try adding a pinch of espresso powder to intensify the chocolate taste. Additionally, you can decorate the top with whole hazelnuts before baking for a beautiful presentation.

Helpful Tips for Success

When measuring the flour and cocoa powder, use the spoon-and-level method to avoid packing too much into the measuring cup, which can lead to dry brownies. The goal is to maintain a careful balance of wet to dry ingredients, ensuring the fudgy quality we love. I prefer using a kitchen scale for precision, especially with ingredients like chocolate and butter.

If you find your brownies are too soft or underbaked, don’t worry! Pop them back in the oven for a few more minutes, checking them frequently to avoid overdoing it. Remember that the brownies will continue to firm up as they cool, so err on the side of a little underbaked rather than overbaked.

Dietary Adaptations

For a gluten-free version, substitute the all-purpose flour with a 1:1 gluten-free flour blend. Just ensure that the blend you choose contains xanthan gum, which helps mimic the texture of all-purpose flour. This allows you to maintain that fudgy thickness while accommodating gluten sensitivities.

If you're aiming to reduce sugar without sacrificing too much taste, you can replace half of the granulated sugar with an equivalent amount of unsweetened applesauce or mashed banana. This will yield a slightly different texture but can also add an interesting flavor twist, particularly with the chocolate and hazelnuts.

Questions About Recipes

→ Can I use dark chocolate instead of semisweet?

Absolutely! Dark chocolate will add a richer flavor, and you might want to adjust the sugar slightly based on your preference.

→ How do I store leftovers?

Store the brownies in an airtight container at room temperature for up to 3 days or refrigerate them for longer freshness.

→ Can I make these gluten-free?

Yes, you can substitute the all-purpose flour with a gluten-free flour blend for a gluten-free version of these brownies.

→ What can I use instead of hazelnuts?

You can substitute hazelnuts with walnuts, pecans or even chocolate chips for additional texture!

Chocolate Hazelnut Brownies

I absolutely love making these Chocolate Hazelnut Brownies because they combine my two favorite ingredients: rich chocolate and crunchy hazelnuts. The texture is incredibly satisfying, with a fudgy interior that contrasts beautifully with the nuttiness from the hazelnuts. Every bite is a delightful experience, and the best part is how quick they are to whip up. Whether I'm enjoying them as an afternoon treat or serving them at a gathering, these brownies always impress and leave everyone craving more.

Prep Time15 minutes
Cooking Duration25 minutes
Overall Time40 minutes

Created by: Etta Langton

Recipe Type: Oven Ideas

Skill Level: Easy

Final Quantity: 12 brownies

What You'll Need

For the Brownies

  1. 1 cup (180g) semisweet chocolate chips
  2. 1/2 cup (115g) unsalted butter
  3. 3/4 cup (150g) granulated sugar
  4. 2 large eggs
  5. 1 teaspoon vanilla extract
  6. 1/2 cup (65g) all-purpose flour
  7. 1/4 cup (25g) cocoa powder
  8. 1/4 teaspoon salt
  9. 1 cup (150g) toasted hazelnuts, chopped

How-To Steps

Step 01

Preheat your oven to 350°F (175°C) and line an 8x8 inch (20x20 cm) baking dish with parchment paper, leaving some overhang for easy removal.

Step 02

In a medium saucepan over low heat, melt the chocolate chips and butter together, stirring continuously until smooth. Remove from heat and let cool slightly.

Step 03

In a large bowl, combine the sugar with the melted chocolate mixture. Stir in the eggs one at a time, mixing well after each addition. Add the vanilla extract.

Step 04

Sift together the flour, cocoa powder, and salt, then fold them into the chocolate mixture until just combined. Finally, stir in the chopped hazelnuts.

Step 05

Pour the batter into the prepared baking dish and spread it evenly. Bake in the preheated oven for about 25 minutes, or until a toothpick inserted in the center comes out with moist crumbs.

Step 06

Allow the brownies to cool in the dish for at least 10 minutes before lifting them out using the parchment overhang. Slice into squares and enjoy!

Extra Tips

  1. For an extra layer of flavor, try adding a pinch of espresso powder to intensify the chocolate taste. Additionally, you can decorate the top with whole hazelnuts before baking for a beautiful presentation.

Nutritional Breakdown (Per Serving)

  • Calories: 380 kcal
  • Total Fat: 26g
  • Saturated Fat: 15g
  • Cholesterol: 195mg
  • Sodium: 85mg
  • Total Carbohydrates: 32g
  • Dietary Fiber: 3g
  • Sugars: 24g
  • Protein: 6g