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Dessert / Hazelnut Brownies: The Ultimate Recipe for Fudgy Perfection

Hazelnut Brownies: The Ultimate Recipe for Fudgy Perfection

May 22, 2025 by NatalieDessert

Hazelnut brownies, oh, where do I even begin? Imagine sinking your teeth into a fudgy, intensely chocolatey brownie, punctuated by the delightful crunch and nutty aroma of toasted hazelnuts. It’s a symphony of textures and flavors that will have you reaching for seconds (and maybe thirds!). This isn’t just any brownie; it’s an experience.

While the exact origins of the brownie are debated, most agree that it emerged in the United States in the late 19th century. Over time, countless variations have sprung up, each adding its own unique twist to this beloved treat. My version, featuring the exquisite pairing of chocolate and hazelnuts, draws inspiration from classic Italian desserts, where this combination is celebrated for its rich and sophisticated profile.

What makes hazelnut brownies so irresistible? It’s the perfect balance of indulgence and comfort. The deep, dark chocolate provides a satisfying richness, while the hazelnuts offer a welcome textural contrast and a subtle, earthy sweetness. They are incredibly easy to make, requiring minimal effort for maximum reward. Whether you’re looking for a quick dessert to satisfy a chocolate craving or a show-stopping treat to impress your guests, these brownies are guaranteed to be a hit. The combination of fudgy texture, intense chocolate flavor, and the nutty crunch of hazelnuts is simply divine. Get ready to bake up a batch of pure happiness!

Hazelnut brownies

Ingredients:

  • 1 cup (2 sticks) unsalted butter, melted
  • 2 cups granulated sugar
  • 1 cup unsweetened cocoa powder
  • 1 teaspoon salt
  • 1 teaspoon baking powder
  • 1 tablespoon vanilla extract
  • 4 large eggs
  • 1 cup all-purpose flour
  • 1 cup chopped hazelnuts, toasted
  • ½ cup semi-sweet chocolate chips (optional)

Preparing the Hazelnut Brownie Batter

  1. Melt the butter: In a large, microwave-safe bowl, melt the butter. You can do this in 30-second intervals, stirring in between, until completely melted. Alternatively, melt the butter in a saucepan over low heat. Be careful not to burn it!
  2. Combine melted butter and sugar: Once the butter is melted, remove it from the heat (or microwave) and stir in the granulated sugar until well combined. The mixture should be smooth and slightly glossy. Don’t worry if it looks a little grainy at this point; it will come together as we add the other ingredients.
  3. Incorporate cocoa powder, salt, and baking powder: Add the unsweetened cocoa powder, salt, and baking powder to the butter and sugar mixture. Stir until everything is thoroughly combined. It’s important to make sure there are no lumps of cocoa powder remaining. This step is crucial for achieving that rich, chocolatey flavor and perfect brownie texture.
  4. Add vanilla extract: Stir in the vanilla extract. The vanilla enhances the chocolate flavor and adds a lovely aroma to the brownies. Use a good quality vanilla extract for the best results.
  5. Incorporate the eggs: Add the eggs one at a time, mixing well after each addition. This is a key step for creating a fudgy texture. Make sure each egg is fully incorporated before adding the next. Overmixing at this stage can lead to tougher brownies, so mix until just combined.
  6. Gently fold in the flour: Gradually add the all-purpose flour to the wet ingredients, mixing until just combined. Be careful not to overmix the batter, as this can develop the gluten in the flour and result in tough brownies. A few streaks of flour are okay at this point.
  7. Add the hazelnuts and chocolate chips (optional): Gently fold in the chopped toasted hazelnuts and chocolate chips (if using). Make sure the hazelnuts are evenly distributed throughout the batter. The toasted hazelnuts add a wonderful nutty flavor and a delightful crunch to the brownies. The chocolate chips add an extra layer of chocolatey goodness.

Baking the Hazelnut Brownies

  1. Preheat the oven: Preheat your oven to 350°F (175°C). Make sure your oven rack is in the center position.
  2. Prepare the baking pan: Grease and flour an 8×8 inch baking pan. You can also line the pan with parchment paper, leaving an overhang on the sides. This will make it easier to lift the brownies out of the pan after baking. Alternatively, use baking spray with flour.
  3. Pour the batter into the pan: Pour the brownie batter into the prepared baking pan and spread it evenly. Use a spatula to ensure the batter reaches all corners of the pan.
  4. Bake the brownies: Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs attached. The baking time may vary depending on your oven, so start checking for doneness around 25 minutes. Be careful not to overbake the brownies, as this will make them dry. You want them to be fudgy and moist in the center.
  5. Cool the brownies: Once the brownies are baked, remove them from the oven and let them cool completely in the pan before cutting. This is important because the brownies will continue to set as they cool. Cooling them completely will also make them easier to cut into clean squares. If you lined the pan with parchment paper, you can lift the brownies out of the pan and place them on a cutting board to cool.

Serving and Storing Your Hazelnut Brownies

  1. Cut the brownies: Once the brownies are completely cool, cut them into squares. Use a sharp knife to cut clean lines. You can wipe the knife clean between cuts to prevent the brownies from sticking.
  2. Serve the brownies: Serve the hazelnut brownies as is, or with a scoop of vanilla ice cream, a dusting of powdered sugar, or a drizzle of chocolate sauce. They are also delicious with a cup of coffee or tea.
  3. Store the brownies: Store the leftover brownies in an airtight container at room temperature for up to 3 days. You can also store them in the refrigerator for up to a week. For longer storage, you can freeze the brownies for up to 2 months. Wrap them tightly in plastic wrap and then place them in a freezer-safe bag or container. Thaw the brownies at room temperature before serving.

Tips and Variations for Perfect Hazelnut Brownies

  1. Toast the hazelnuts: Toasting the hazelnuts before adding them to the batter enhances their flavor and adds a delightful crunch. To toast the hazelnuts, spread them in a single layer on a baking sheet and bake at 350°F (175°C) for 8-10 minutes, or until they are lightly golden and fragrant. Let them cool slightly before chopping.
  2. Use high-quality cocoa powder: Using a good quality unsweetened cocoa powder will make a big difference in the flavor of your brownies. Look for a cocoa powder that is rich and dark in color.
  3. Don’t overmix the batter: Overmixing the batter can develop the gluten in the flour and result in tough brownies. Mix the batter until just combined. A few streaks of flour are okay.
  4. Adjust baking time: The baking time may vary depending on your oven. Start checking for doneness around 25 minutes. The brownies are done when a toothpick inserted into the center comes out with moist crumbs attached.
  5. Add a swirl of Nutella: For an extra hazelnut flavor, swirl a few tablespoons of Nutella into the batter before baking.
  6. Add espresso powder: A teaspoon of espresso powder can enhance the chocolate flavor of the brownies.
  7. Use different nuts: If you don’t have hazelnuts, you can use other nuts such as walnuts, pecans, or almonds.
  8. Make them gluten-free: To make these brownies gluten-free, substitute the all-purpose flour with a gluten-free all-purpose flour blend.
  9. Add a frosting: For an extra decadent treat, frost the brownies with your favorite frosting. Chocolate frosting, cream cheese frosting, or peanut butter frosting would all be delicious.
  10. Experiment with different chocolate: Try using different types of chocolate chips, such as dark chocolate, milk chocolate, or white chocolate. You can also add chunks of your favorite chocolate bar to the batter.

Troubleshooting Common Brownie Problems

  1. Brownies are too dry: This is usually caused by overbaking. Make sure to check for doneness around 25 minutes and don’t overbake the brownies. Also, make sure you are using the correct amount of flour.
  2. Brownies are too gooey: This could be caused by underbaking or using too much butter. Make sure to bake the brownies until a toothpick inserted into the center comes out with moist crumbs attached. Also, make sure you are using the correct amount of butter.
  3. Brownies are too cakey: This is usually caused by overmixing the batter or using too much flour. Mix the batter until just combined and make sure you are using the correct amount of flour.
  4. Brownies are too dense: This could be caused by not creaming the butter and sugar together properly. Make sure to cream the butter and sugar together until light and fluffy.
  5. Brownies are not chocolatey enough: Use a high-quality cocoa powder and consider adding espresso powder to enhance the chocolate flavor.

Hazelnut brownies

Conclusion:

And there you have it! These hazelnut brownies are more than just a dessert; they’re an experience. The rich, fudgy texture combined with the delightful crunch of toasted hazelnuts creates a symphony of flavors and textures that will leave you craving more. I truly believe this recipe is a must-try for any brownie lover, and here’s why: it’s incredibly easy to make, uses readily available ingredients, and delivers a gourmet taste that rivals anything you’d find in a fancy bakery. But the best part? It’s completely customizable! Feel free to get creative and experiment with different variations to suit your taste. For an extra decadent treat, try adding a swirl of Nutella on top before baking. Or, if you’re feeling adventurous, incorporate a pinch of sea salt to enhance the sweetness and bring out the nutty notes even further. A sprinkle of chopped hazelnuts after baking adds a beautiful finishing touch and intensifies the hazelnut flavor. Serving suggestions are endless! These brownies are perfect on their own, warm from the oven with a scoop of vanilla ice cream, or as part of a more elaborate dessert platter. They also pair wonderfully with a cup of coffee or a glass of milk. For a truly indulgent experience, try crumbling them over a bowl of chocolate mousse or using them as a base for a brownie sundae. They are also fantastic served with fresh berries and a dollop of whipped cream. Don’t be intimidated by the idea of baking from scratch. This recipe is foolproof, even for beginner bakers. Just follow the instructions carefully, and you’ll be rewarded with a batch of incredibly delicious and satisfying brownies. The aroma alone, as they bake, is enough to make your mouth water and fill your kitchen with warmth and happiness. I’m so confident that you’ll love these hazelnut brownies that I urge you to give them a try. Seriously, what are you waiting for? Gather your ingredients, preheat your oven, and get ready to embark on a baking adventure that will tantalize your taste buds and impress your friends and family. Once you’ve made them, I’d absolutely love to hear about your experience! Did you try any variations? Did you serve them with anything special? What did your friends and family think? Share your photos and stories in the comments below. Your feedback is invaluable and helps me continue to create and share recipes that you’ll love. So, go ahead, bake a batch of these amazing brownies, and let me know what you think. Happy baking! I can’t wait to hear all about your hazelnut brownies success!

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Hazelnut Brownies: The Ultimate Recipe for Fudgy Perfection


  • Total Time: 60 minutes
  • Yield: 16 brownies 1x
Print Recipe
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Description

Rich, fudgy hazelnut brownies with deep chocolate flavor and a delightful nutty crunch. Easy to make and perfect for any occasion.


Ingredients

Scale
  • 1 cup (2 sticks) unsalted butter, melted
  • 2 cups granulated sugar
  • 1 cup unsweetened cocoa powder
  • 1 teaspoon salt
  • 1 teaspoon baking powder
  • 1 tablespoon vanilla extract
  • 4 large eggs
  • 1 cup all-purpose flour
  • 1 cup chopped hazelnuts, toasted
  • ½ cup semi-sweet chocolate chips (optional)

Instructions

  1. In a large, microwave-safe bowl, melt the butter. You can do this in 30-second intervals, stirring in between, until completely melted. Alternatively, melt the butter in a saucepan over low heat. Be careful not to burn it!
  2. Once the butter is melted, remove it from the heat (or microwave) and stir in the granulated sugar until well combined. The mixture should be smooth and slightly glossy. Don’t worry if it looks a little grainy at this point; it will come together as we add the other ingredients.
  3. Add the unsweetened cocoa powder, salt, and baking powder to the butter and sugar mixture. Stir until everything is thoroughly combined. It’s important to make sure there are no lumps of cocoa powder remaining. This step is crucial for achieving that rich, chocolatey flavor and perfect brownie texture.
  4. Stir in the vanilla extract. The vanilla enhances the chocolate flavor and adds a lovely aroma to the brownies. Use a good quality vanilla extract for the best results.
  5. Add the eggs one at a time, mixing well after each addition. This is a key step for creating a fudgy texture. Make sure each egg is fully incorporated before adding the next. Overmixing at this stage can lead to tougher brownies, so mix until just combined.
  6. Gradually add the all-purpose flour to the wet ingredients, mixing until just combined. Be careful not to overmix the batter, as this can develop the gluten in the flour and result in tough brownies. A few streaks of flour are okay at this point.
  7. Gently fold in the chopped toasted hazelnuts and chocolate chips (if using). Make sure the hazelnuts are evenly distributed throughout the batter. The toasted hazelnuts add a wonderful nutty flavor and a delightful crunch to the brownies. The chocolate chips add an extra layer of chocolatey goodness.
  8. Preheat your oven to 350°F (175°C). Make sure your oven rack is in the center position.
  9. Grease and flour an 8×8 inch baking pan. You can also line the pan with parchment paper, leaving an overhang on the sides. This will make it easier to lift the brownies out of the pan after baking. Alternatively, use baking spray with flour.
  10. Pour the brownie batter into the prepared baking pan and spread it evenly. Use a spatula to ensure the batter reaches all corners of the pan.
  11. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs attached. The baking time may vary depending on your oven, so start checking for doneness around 25 minutes. Be careful not to overbake the brownies, as this will make them dry. You want them to be fudgy and moist in the center.
  12. Once the brownies are baked, remove them from the oven and let them cool completely in the pan before cutting. This is important because the brownies will continue to set as they cool. Cooling them completely will also make them easier to cut into clean squares. If you lined the pan with parchment paper, you can lift the brownies out of the pan and place them on a cutting board to cool.
  13. Once the brownies are completely cool, cut them into squares. Use a sharp knife to cut clean lines. You can wipe the knife clean between cuts to prevent the brownies from sticking.
  14. Serve the hazelnut brownies as is, or with a scoop of vanilla ice cream, a dusting of powdered sugar, or a drizzle of chocolate sauce. They are also delicious with a cup of coffee or tea.
  15. Store the leftover brownies in an airtight container at room temperature for up to 3 days. You can also store them in the refrigerator for up to a week. For longer storage, you can freeze the brownies for up to 2 months. Wrap them tightly in plastic wrap and then place them in a freezer-safe bag or container. Thaw the brownies at room temperature before serving.

Notes

  • Toast the hazelnuts: Toasting the hazelnuts before adding them to the batter enhances their flavor and adds a delightful crunch. To toast the hazelnuts, spread them in a single layer on a baking sheet and bake at 350°F (175°C) for 8-10 minutes, or until they are lightly golden and fragrant. Let them cool slightly before chopping.
  • Use high-quality cocoa powder: Using a good quality unsweetened cocoa powder will make a big difference in the flavor of your brownies. Look for a cocoa powder that is rich and dark in color.
  • Don’t overmix the batter: Overmixing the batter can develop the gluten in the flour and result in tough brownies. Mix the batter until just combined. A few streaks of flour are okay.
  • Adjust baking time: The baking time may vary depending on your oven. Start checking for doneness around 25 minutes. The brownies are done when a toothpick inserted into the center comes out with moist crumbs attached.
  • Add a swirl of Nutella: For an extra hazelnut flavor, swirl a few tablespoons of Nutella into the batter before baking.
  • Add espresso powder: A teaspoon of espresso powder can enhance the chocolate flavor of the brownies.
  • Use different nuts: If you don’t have hazelnuts, you can use other nuts such as walnuts, pecans, or almonds.
  • Make them gluten-free: To make these brownies gluten-free, substitute the all-purpose flour with a gluten-free all-purpose flour blend.
  • Add a frosting: For an extra decadent treat, frost the brownies with your favorite frosting. Chocolate frosting, cream cheese frosting, or peanut butter frosting would all be delicious.
  • Experiment with different chocolate: Try using different types of chocolate chips, such as dark chocolate, milk chocolate, or white chocolate. You can also add chunks of your favorite chocolate bar to the batter.
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes

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