Chocolate Hazelnut Brownies

Highlighted under: Baking & Desserts

I've always had a weakness for rich, decadent desserts, and these chocolate hazelnut brownies truly deliver! The perfect blend of smooth chocolate and nutty hazelnuts creates an irresistible flavor that I can't get enough of. With a fudgy texture that’s chewy yet satisfying, these brownies are incredibly easy to whip up, making them my go-to treat for any occasion. Trust me, once you've tasted them, you'll be dreaming about making another batch before the last one even leaves the oven.

Gwendolyn Reed

Created by

Gwendolyn Reed

Last updated on 2026-01-13T05:25:07.344Z

Every time I bake these chocolate hazelnut brownies, I’m reminded of the first time I made them for a gathering of friends. The moment they came out of the oven, the aroma of chocolate filled the kitchen, and they were gone in minutes! It’s like they have a magic pull; people just can’t resist a warm, gooey brownie smothered in that nutty goodness.

One tip I discovered is to lightly toast the hazelnuts before adding them to the batter; it amplifies their flavor and adds a delightful crunch. This small step makes a huge difference, transforming a simple brownie into something truly gourmet!

Why You Will Love These Brownies

  • Rich chocolate flavor paired with crunchy hazelnuts
  • Fudgy texture that melts in your mouth
  • Perfect for sharing or indulging alone

Mastering the Fudgy Texture

Achieving that signature fudgy texture in brownies requires careful handling of the ingredients. When mixing butter and sugar, whisk just until combined—overmixing at this stage can introduce too much air, resulting in cake-like brownies instead of the desired density. This recipe benefits from using unsweetened cocoa powder, which contributes to the deep, rich chocolate flavor while keeping the fat content balanced. Remember, the key is to mix gently when incorporating dry ingredients to maintain that fudgy consistency.

Don't be surprised if the batter appears slightly thicker than most brownie recipes. This richness is what gives these brownies their delightful chew. If you're looking for an even richer taste, consider using dark chocolate cocoa powder instead of regular, as it will amplify the chocolate intensity while still blending beautifully with the sugar and butter.

Hazelnuts: Crunch and Flavor Boost

The chopped hazelnuts not only add a delightful crunch but also enhance the overall flavor profile of these brownies. Toasting the hazelnuts before folding them in is a crucial step—simply spread them on a baking sheet and toast in a preheated oven at 350°F (175°C) for about 10 minutes or until fragrant. This process brings out their natural oil and intensifies the nutty flavor, resulting in an irresistible combination with the chocolate.

If you’re not a fan of hazelnuts or have allergies, feel free to substitute with walnuts or pecans for a similar texture. Alternatively, you could use mini chocolate chips or even dried fruits like cranberries for a different twist. Just keep in mind that these substitutions will alter the flavor slightly, so choose what you enjoy the most!

Storage and Serving Suggestions

These brownies can be stored in an airtight container at room temperature for up to four days, making them an excellent make-ahead treat for gatherings. If you want to keep them fresher for longer, you can refrigerate them for up to a week or freeze for up to three months. Just be sure to wrap them tightly in plastic wrap before placing them in a freezer-safe bag to avoid freezer burn.

When it comes to serving, I love to pair these brownies with a scoop of vanilla ice cream or a dollop of whipped cream. For a gourmet touch, drizzle with chocolate or caramel sauce and sprinkle with extra chopped hazelnuts. This elevates the presentation and offers a delightful contrast in textures and temperatures! Another fun idea is to cut them into smaller squares for bite-sized desserts at parties.

Ingredients

Gather the following ingredients to make the most delightful chocolate hazelnut brownies:

Ingredients

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

Make sure to have all these ingredients ready to go. It will make the baking process much smoother!

Instructions

Follow these simple steps to create your batch of delectable brownies:

Melt the Butter

In a saucepan over low heat, melt the butter completely. Remove from heat and let it cool for a few minutes.

Mix Ingredients

In a large bowl, combine melted butter and granulated sugar. Whisk in eggs one at a time, followed by vanilla extract.

Combine Dry Ingredients

In another bowl, whisk together flour, cocoa powder, baking powder, and salt until well mixed.

Combine Wet and Dry

Gradually add the dry mixture to the wet mixture, stirring until just combined. Do not over-mix.

Add Hazelnuts and Chocolate Chips

Fold in the chopped hazelnuts and chocolate chips until evenly distributed.

Bake

Pour the batter into a greased 9x13 inch baking pan and bake at 350°F (175°C) for 25 minutes or until a toothpick inserted comes out with a few moist crumbs.

Cool and Serve

Allow brownies to cool in the pan before cutting into squares. Serve warm or at room temperature.

Enjoy your homemade brownies and don’t forget to share them with friends and family!

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Pro Tips

  • For an extra touch, sprinkle a pinch of sea salt on top of the brownies just before baking for a delightful contrast to the sweetness.

Troubleshooting Common Issues

If your brownies come out too crumbly, this is often due to an overabundance of flour or not enough fat. It's crucial to measure flour accurately—spoon it into your measuring cup rather than scooping directly from the bag. Additionally, ensure that the butter is fully melted and incorporated before mixing with the sugars; this fat content helps bind the brownies together.

On the other hand, if they seem too gooey or underbaked after the suggested baking time, the oven temperature may be off. I recommend using an oven thermometer to ensure accuracy. For future batches, you can also extend baking time in small increments while keeping a close eye, as every oven is different in how it distributes heat.

Scaling the Recipe

This recipe can easily be scaled for larger gatherings. To double the batch, simply increase all ingredient quantities proportionately while maintaining the same baking time. However, if you choose to bake larger quantities in a bigger pan, be mindful that the bake time may need to be adjusted, generally by adding 5-10 minutes for a thicker batter. Always check for doneness with a toothpick inserted into the center; it should come out with a few moist crumbs, but not wet batter.

If you wish to make a smaller batch, such as a half recipe, you can use an 8x8-inch pan. The baking time may shorten slightly, so watch for visual cues like slightly pulling away edges. This flexibility allows you to always have fresh brownies at hand, regardless of the occasion or number of guests!

Questions About Recipes

→ Can I substitute the butter with oil?

Yes, you can use a light flavored oil, but it may change the texture slightly.

→ How should I store the brownies?

Keep them in an airtight container at room temperature for up to 5 days.

→ Can I use different nuts?

Absolutely! Walnuts or pecans can also work beautifully in this recipe.

→ What if I want to make these gluten-free?

You can substitute all-purpose flour with a gluten-free flour blend.

Chocolate Hazelnut Brownies

I've always had a weakness for rich, decadent desserts, and these chocolate hazelnut brownies truly deliver! The perfect blend of smooth chocolate and nutty hazelnuts creates an irresistible flavor that I can't get enough of. With a fudgy texture that’s chewy yet satisfying, these brownies are incredibly easy to whip up, making them my go-to treat for any occasion. Trust me, once you've tasted them, you'll be dreaming about making another batch before the last one even leaves the oven.

Prep Time15 minutes
Cooking Duration25 minutes
Overall Time40 minutes

Created by: Gwendolyn Reed

Recipe Type: Baking & Desserts

Skill Level: Easy

Final Quantity: 12 brownies

What You'll Need

Ingredients

  1. 1 cup unsalted butter
  2. 2 cups granulated sugar
  3. 4 large eggs
  4. 1 teaspoon vanilla extract
  5. 1 cup all-purpose flour
  6. 1 cup unsweetened cocoa powder
  7. 1 teaspoon baking powder
  8. 1/2 teaspoon salt
  9. 1 cup chopped hazelnuts
  10. 1/2 cup chocolate chips

How-To Steps

Step 01

In a saucepan over low heat, melt the butter completely. Remove from heat and let it cool for a few minutes.

Step 02

In a large bowl, combine melted butter and granulated sugar. Whisk in eggs one at a time, followed by vanilla extract.

Step 03

In another bowl, whisk together flour, cocoa powder, baking powder, and salt until well mixed.

Step 04

Gradually add the dry mixture to the wet mixture, stirring until just combined. Do not over-mix.

Step 05

Fold in the chopped hazelnuts and chocolate chips until evenly distributed.

Step 06

Pour the batter into a greased 9x13 inch baking pan and bake at 350°F (175°C) for 25 minutes or until a toothpick inserted comes out with a few moist crumbs.

Step 07

Allow brownies to cool in the pan before cutting into squares. Serve warm or at room temperature.

Extra Tips

  1. For an extra touch, sprinkle a pinch of sea salt on top of the brownies just before baking for a delightful contrast to the sweetness.

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