Chocolate Hazelnut Brownies

Highlighted under: Baking & Desserts

I absolutely love chocolate hazelnut brownies, and this recipe captures everything I adore about them. The rich, velvety chocolate combined with the nutty flavor of hazelnuts creates a decadent treat that simply melts in your mouth. Baking these brownies fills the kitchen with the most delicious aroma, making it hard to resist indulging in them straight out of the oven. I’m excited to share this treasured recipe that’s perfect for gatherings or a cozy night in—let’s whip up something extraordinary!

Ariana Brooks

Created by

Ariana Brooks

Last updated on 2026-01-13T03:55:15.220Z

When I first made these chocolate hazelnut brownies, I knew I had stumbled upon a recipe that would be a hit. The combination of using high-quality chocolate and freshly roasted hazelnuts elevates the flavor, creating a perfect balance that keeps my family coming back for more. The trick lies in melting the chocolate just right; using a double boiler helps achieve that silky texture, which is key for that fudgy brownie goodness.

During my baking experiments, I learned that letting the brownies cool completely before cutting them ensures neat squares. Otherwise, you end up with a gooey mess! I’ve also tried adding a sprinkle of sea salt on top, which really enhances the chocolate flavor. I can confidently say that these brownies are a go-to dessert at my home!

Why You'll Love These Brownies

  • Rich chocolate flavor paired with crunchy hazelnuts
  • Fudgy texture that satisfies your sweet tooth
  • Simple to make and perfect for sharing

Mastering the Brownie Batter

The key to achieving a fudgy brownie texture lies in the balance of ingredients, particularly the fat and the flour. By using both melted butter and semi-sweet chocolate, you create a rich base that helps retain moisture in the brownies. Make sure to gently fold in the dry ingredients instead of mixing vigorously; this will prevent overworking the batter, ensuring a dense and fudgy finish rather than a cakey texture.

When incorporating the sugar, eggs, and vanilla into the melted chocolate mixture, whisk them together until the mixture is glossy and well combined. This step is crucial as it helps to aerate the mixture slightly, leading to a delightful chewiness in the final product. Remember, a lumpy batter is perfectly fine; you want to avoid over-mixing for the best results.

Choosing the Right Hazelnuts

The flavor and texture of your brownies can greatly benefit from high-quality hazelnuts. Opt for fresh, toasted hazelnuts to enhance their nutty flavor, as well as their crunchiness. You can toast raw hazelnuts in a dry skillet over medium heat for about 5-7 minutes, stirring frequently until they are fragrant and golden brown. This quick step elevates the flavor profile of your brownies significantly.

If you have nut allergies or are simply looking for a twist, feel free to substitute hazelnuts with walnuts or pecans. They provide a similar crunch and work well with the chocolate. For a completely nut-free version, you can omit the nuts entirely and add extra chocolate chips for an indulgent treat. The brownies will still maintain their rich taste and fudgy texture.

Serving and Storing Your Brownies

To serve these decadent brownies, consider pairing them with a scoop of vanilla ice cream or a dollop of whipped cream for a delightful contrast in flavors and textures. A drizzle of chocolate sauce or a sprinkle of sea salt can also elevate their presentation. Cut them into smaller squares for a bite-sized treat that’s perfect for sharing at gatherings or parties.

Storing your brownies requires careful consideration to maintain their moist texture. Once completely cooled, store them in an airtight container at room temperature for up to 3 days. For longer storage, place them in the fridge for up to a week. If you want to freeze them, wrap each square individually in plastic wrap, then place in a freezer-safe bag. They can be frozen for up to three months, and you can thaw them at room temperature before serving or enjoy them straight from the freezer for a fudgy treat.

Ingredients for Chocolate Hazelnut Brownies

Brownie Ingredients

  • 1 cup unsalted butter
  • 2 cups granulated sugar
  • 4 large eggs
  • 2 teaspoons vanilla extract
  • 1 cup all-purpose flour
  • 1 cup cocoa powder
  • 1/2 teaspoon salt
  • 1 cup chopped hazelnuts
  • 1 cup semi-sweet chocolate chips

Make sure to have all your ingredients ready before starting!

Instructions

Preheat and Prepare

Preheat your oven to 350°F (175°C). Grease a 9x13 inch baking pan or line it with parchment paper.

Melt the Chocolate and Butter

In a double boiler, melt the butter and semi-sweet chocolate together, stirring until smooth. Remove from heat and let cool slightly.

Mix Wet Ingredients

In a large bowl, whisk together the sugar, eggs, and vanilla until well combined. Stir in the melted chocolate mixture.

Combine Dry Ingredients

In another bowl, sift together the flour, cocoa powder, and salt. Gradually fold the dry ingredients into the wet mixture until just combined.

Add Hazelnuts and Bake

Fold in the chopped hazelnuts and chocolate chips. Pour the batter into the prepared pan and spread evenly. Bake for 25 minutes or until a toothpick comes out with a few moist crumbs.

Cool and Cut

Allow the brownies to cool completely in the pan on a wire rack before cutting them into squares.

Enjoy your delicious chocolate hazelnut brownies!

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Pro Tips

  • For an added twist, try drizzling melted chocolate on top for decoration before serving.

Troubleshooting Common Issues

If you find your brownies are coming out too dry, it could be due to overbaking. Make sure to start checking for doneness at the 25-minute mark. Use a toothpick inserted in the center; it should come out with a few moist crumbs, indicating they’re perfectly baked. Remember, they will continue to set a bit as they cool, so it's better to err on the side of underbaking.

Another issue might be related to the chocolate texture. If your brownies seem grainy, that might be a result of the chocolate not melting properly. Ensure you're using a double boiler and stirring continuously until the chocolate and butter are completely smooth before mixing with the sugar and eggs.

Making It Your Own

Feel free to experiment with additional flavors by adding a teaspoon of instant coffee granules to the batter. This will enhance the chocolate flavor without making the brownies taste like coffee. Alternatively, you can infuse the batter with orange zest or peppermint extract for a different flavor profile that pairs beautifully with chocolate.

For an extra layer of decadence, consider swirling in a layer of Nutella or caramel sauce on top before baking. Simply drop spoonfuls of your desired filling over the brownie batter and use a knife to swirl it in gently. This adds a beautiful marbling effect and extra flavor that will have everyone coming back for more!

Questions About Recipes

→ Can I use a different type of nut?

Absolutely! Feel free to substitute with walnuts or pecans if you prefer.

→ How should I store leftovers?

Store them in an airtight container at room temperature for up to 4 days or refrigerate for a longer shelf life.

→ Can I make these brownies gluten-free?

Yes! Use a gluten-free all-purpose flour blend to make these brownies gluten-free.

→ What can I serve these brownies with?

Serve them warm with a scoop of vanilla ice cream or a dollop of whipped cream for an indulgent dessert.

Chocolate Hazelnut Brownies

I absolutely love chocolate hazelnut brownies, and this recipe captures everything I adore about them. The rich, velvety chocolate combined with the nutty flavor of hazelnuts creates a decadent treat that simply melts in your mouth. Baking these brownies fills the kitchen with the most delicious aroma, making it hard to resist indulging in them straight out of the oven. I’m excited to share this treasured recipe that’s perfect for gatherings or a cozy night in—let’s whip up something extraordinary!

Prep Time15 minutes
Cooking Duration25 minutes
Overall Time40 minutes

Created by: Ariana Brooks

Recipe Type: Baking & Desserts

Skill Level: Easy

Final Quantity: 12 brownies

What You'll Need

Brownie Ingredients

  1. 1 cup unsalted butter
  2. 2 cups granulated sugar
  3. 4 large eggs
  4. 2 teaspoons vanilla extract
  5. 1 cup all-purpose flour
  6. 1 cup cocoa powder
  7. 1/2 teaspoon salt
  8. 1 cup chopped hazelnuts
  9. 1 cup semi-sweet chocolate chips

How-To Steps

Step 01

Preheat your oven to 350°F (175°C). Grease a 9x13 inch baking pan or line it with parchment paper.

Step 02

In a double boiler, melt the butter and semi-sweet chocolate together, stirring until smooth. Remove from heat and let cool slightly.

Step 03

In a large bowl, whisk together the sugar, eggs, and vanilla until well combined. Stir in the melted chocolate mixture.

Step 04

In another bowl, sift together the flour, cocoa powder, and salt. Gradually fold the dry ingredients into the wet mixture until just combined.

Step 05

Fold in the chopped hazelnuts and chocolate chips. Pour the batter into the prepared pan and spread evenly. Bake for 25 minutes or until a toothpick comes out with a few moist crumbs.

Step 06

Allow the brownies to cool completely in the pan on a wire rack before cutting them into squares.

Extra Tips

  1. For an added twist, try drizzling melted chocolate on top for decoration before serving.

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