I make Hazelnut Espresso Brownies when I want a dessert that feels rich, cozy, and just a little grown-up. The deep chocolate flavor, toasted hazelnuts, and gentle espresso taste come together in a way that makes a simple brownie feel extra special.
These brownies are still easy enough for a home kitchen, which is why I love them. They have a fudgy center, crisp edges, and a nutty crunch that makes them perfect for sharing after dinner, packing for a treat, or serving with coffee on a slow afternoon.
Why You’ll Love This Recipe
Hazelnut Espresso Brownies are rich, chewy, and full of deep chocolate flavor. The espresso does not make the brownies taste like strong coffee, but it helps the chocolate taste bolder and warmer.
The toasted hazelnuts add a lovely crunch and a buttery flavor that works beautifully with the fudgy brownie base. It is a simple way to make homemade brownies feel bakery-style without adding hard steps.
This recipe is also dependable for families because the brownies slice well once cooled and keep nicely for several days. You can serve them plain, dust them with powdered sugar, or add a scoop of vanilla ice cream for a cozy dessert.
Serves: 12 people
This recipe makes one 9-inch square pan of brownies, which serves about 12 people. The brownies are rich, so medium-sized squares are usually just right for dessert or an afternoon treat.
For smaller children or a dessert platter, you can cut them into 16 smaller pieces. If you are baking for a larger gathering, it is best to make two separate pans instead of doubling into one large pan, so the centers bake evenly.
Ingredients You’ll Need
For the Brownie Batter
- 1/2 cup unsalted butter, melted
- 1 tablespoon neutral oil, such as avocado oil or vegetable oil
- 1 cup granulated sugar
- 1/2 cup packed light brown sugar
- 2 large eggs, room temperature
- 1 large egg yolk, room temperature
- 2 teaspoons vanilla extract
- 1 tablespoon instant espresso powder
- 3/4 cup all-purpose flour
- 2/3 cup unsweetened cocoa powder
- 1/2 teaspoon fine sea salt
- 1/2 teaspoon baking powder
- 3/4 cup semi-sweet chocolate chips
- 1/2 cup toasted hazelnuts, roughly chopped
For the Topping
- 1/4 cup semi-sweet chocolate chips
- 1/4 cup toasted hazelnuts, roughly chopped
- 1/2 teaspoon flaky sea salt, optional
For Serving
- Powdered sugar, optional
- Vanilla ice cream, optional
- Fresh berries, optional
Pro Tips
Toast the hazelnuts before adding them to the batter. Toasting brings out their warm, nutty flavor and gives the brownies a better crunch.
Rub off as much of the hazelnut skin as you can after toasting. A little skin is fine, but removing most of it helps keep the flavor smooth instead of slightly bitter.
Use instant espresso powder, not brewed coffee, for the best texture. Espresso powder adds deep flavor without adding extra liquid that could change how the brownies bake.
Do not overmix once the flour and cocoa powder are added. Stir just until the dry streaks disappear, so the brownies stay fudgy instead of turning cakey.
Let the brownies cool completely before slicing. This is especially important for fudgy brownies because the center needs time to set and hold clean edges.
Use a sharp knife and wipe it between cuts. This helps each square look neat, especially when the brownies are rich and packed with melted chocolate.
Tools You’ll Need
- 9-inch square baking pan
- Parchment paper
- Baking sheet for toasting hazelnuts
- Medium mixing bowl
- Small bowl
- Whisk
- Silicone spatula
- Measuring cups
- Measuring spoons
- Sharp knife
- Cutting board
- Wire cooling rack
- Clean kitchen towel for rubbing hazelnut skins
- Fine mesh sieve, optional for powdered sugar
Substitutions and Variations
Make It Nut-Free
Skip the hazelnuts and use extra chocolate chips instead. The brownies will still be rich and fudgy, but they will have a smoother texture without the crunch.
Use a Different Nut
Swap the hazelnuts for toasted walnuts, pecans, or almonds. Each one gives the brownies a slightly different flavor while keeping the same cozy chocolate base.
Make It Dairy-Free
Use plant-based butter in place of unsalted butter and choose dairy-free chocolate chips. The brownies will still bake up rich, especially with the cocoa powder and espresso.
Soften the Coffee Flavor
Use 1 to 2 teaspoons of espresso powder instead of 1 tablespoon. This keeps the chocolate flavor deep but makes the espresso note more gentle for kids or anyone who prefers a milder taste.
Add More Texture
Fold in 1/3 cup toffee bits, chopped dark chocolate, or cacao nibs with the chocolate chips. These add little pockets of crunch and flavor while keeping the brownies familiar and easy to enjoy.
Make Ahead Tips
Hazelnut Espresso Brownies are a great make-ahead dessert because they need time to cool and set before slicing. The fudgy center becomes cleaner and easier to cut after the brownies have rested for a few hours.
You can toast and chop the hazelnuts up to 5 days ahead of time. Let them cool completely, then store them in an airtight container at room temperature so they stay crisp.
You can also measure the dry ingredients ahead of time and keep them in a sealed container. This is helpful when you want to bake quickly after dinner or make the recipe with kids.
The brownies can be baked 1 day ahead and stored tightly covered at room temperature. If your kitchen is warm, keep them in the refrigerator and bring them back to room temperature before serving.
For gatherings, bake the brownies the night before and slice them the next day. The flavor gets deeper as they sit, and the espresso helps the chocolate taste even richer.
Instructions
Step 1: Prepare the Pan and Oven
Preheat the oven to 350°F. Line a 9-inch square baking pan with parchment paper, leaving a little overhang on two sides so the brownies are easy to lift out.
Lightly grease the parchment paper and any exposed sides of the pan. This helps the brownies release cleanly and keeps the edges from sticking.
Set the pan aside while you make the batter. Having the pan ready first keeps the baking process calm and simple.
Step 2: Toast the Hazelnuts
Spread the hazelnuts on a baking sheet in a single layer. Toast them in the 350°F oven for 8 to 10 minutes, until they smell warm and nutty.
Transfer the hot hazelnuts to a clean kitchen towel. Rub them gently inside the towel to remove most of the loose skins.
Let the hazelnuts cool, then roughly chop them. Set aside 1/2 cup chopped toasted hazelnuts for the batter and 1/4 cup chopped toasted hazelnuts for the topping.
Step 3: Mix the Butter, Oil, and Sugars
In a medium mixing bowl, whisk together 1/2 cup melted unsalted butter, 1 tablespoon neutral oil, 1 cup granulated sugar, and 1/2 cup packed light brown sugar. Whisk for about 45 seconds, until the mixture looks glossy and smooth.
The butter adds rich flavor, while the small amount of oil helps keep the brownies soft and fudgy. Mixing the sugars well at this stage also helps create a shiny top.
Use a steady hand here, but do not worry about making it perfect. The mixture should look thick, shiny, and well blended.
Step 4: Add the Eggs, Vanilla, and Espresso
Add 2 large room-temperature eggs, 1 large room-temperature egg yolk, 2 teaspoons vanilla extract, and 1 tablespoon instant espresso powder to the bowl. Whisk for about 1 minute, until the mixture becomes thick and smooth.
The extra egg yolk helps make the brownies rich and dense. The espresso powder blends into the batter and deepens the chocolate flavor without adding extra liquid.
Make sure the eggs are fully mixed in before adding the dry ingredients. A smooth base helps the brownies bake evenly.
Step 5: Fold in the Dry Ingredients
Add 3/4 cup all-purpose flour, 2/3 cup unsweetened cocoa powder, 1/2 teaspoon fine sea salt, and 1/2 teaspoon baking powder to the bowl. Use a silicone spatula to fold the dry ingredients into the wet mixture.
Stir gently until you no longer see dry streaks of flour or cocoa powder. The batter will be thick, dark, and rich.
Do not beat the batter once the flour is added. Overmixing can make the brownies firmer and more cakey instead of soft and fudgy.
Step 6: Add Chocolate Chips and Hazelnuts
Fold in 3/4 cup semi-sweet chocolate chips and 1/2 cup roughly chopped toasted hazelnuts. Stir just enough to spread them evenly through the batter.
The chocolate chips create little melted pockets throughout the brownies. The hazelnuts add crunch and a warm flavor that makes the espresso taste even smoother.
Scrape the bottom and sides of the bowl so everything is mixed evenly. The batter should be thick enough to scoop, not pour.
Step 7: Fill the Pan and Add Toppings
Spread the brownie batter into the prepared 9-inch square pan. Use a spatula to push it gently into the corners and smooth the top.
Sprinkle 1/4 cup semi-sweet chocolate chips and 1/4 cup roughly chopped toasted hazelnuts over the surface. Add 1/2 teaspoon flaky sea salt if you like a sweet and salty finish.
Press the toppings very lightly into the batter so they stay in place. Do not press too hard, or they may sink too much while baking.
Step 8: Bake the Brownies
Bake the brownies at 350°F for 30 to 36 minutes. The edges should look set, and the center should look slightly soft but not wet.
Insert a toothpick near the center to check for doneness. It should come out with moist crumbs, not raw batter.
Be careful not to overbake these brownies. They continue to set as they cool, and pulling them from the oven at the right time keeps the center fudgy.
Step 9: Cool and Slice
Place the pan on a wire cooling rack and let the brownies cool completely. This usually takes about 1 1/2 to 2 hours, depending on your kitchen.
Once cooled, use the parchment paper overhang to lift the brownies out of the pan. Place them on a cutting board and slice into 12 squares.
For cleaner cuts, use a sharp knife and wipe it between slices. Serve plain, dusted with powdered sugar, or with vanilla ice cream and fresh berries.
Serving Suggestions
Hazelnut Espresso Brownies are lovely served at room temperature because the fudgy texture has time to settle. The chocolate flavor tastes deep, and the hazelnuts keep their gentle crunch.
For a cozy dessert, serve each brownie with a scoop of vanilla ice cream. The cold creaminess pairs well with the espresso and makes the brownies feel extra special.
Fresh berries also work beautifully with these brownies. Strawberries, raspberries, or blackberries add a bright flavor that balances the rich chocolate.
For a coffee-style treat, serve a small square with a cup of coffee, tea, or warm milk. This makes the brownies feel right for an afternoon snack or a simple dessert after dinner.
You can also cut the brownies into smaller bites for a dessert board. Add fruit, cookies, and a little bowl of whipped cream for an easy family-friendly platter.
If serving to kids, small squares are usually best because the brownies are rich. You can also use less espresso powder in the batter if you want a softer coffee flavor.
Leftovers and Storage
Store leftover Hazelnut Espresso Brownies in an airtight container at room temperature for up to 3 days. Keep them in a cool spot so the chocolate chips and fudgy center hold their texture well.
For longer storage, place the brownies in the refrigerator for up to 5 days. Let them sit at room temperature for 10 to 15 minutes before serving so they soften again.
If stacking the brownies, place a piece of parchment paper between layers. This helps protect the tops and keeps the chocolate from sticking.
These brownies also freeze well. Wrap individual squares tightly in plastic wrap, place them in a freezer-safe bag or container, and freeze for up to 2 months.
Thaw frozen brownies overnight in the refrigerator or at room temperature for about an hour. For a warm brownie, microwave one square for 10 to 15 seconds, just until soft.
Nutrition and Benefits
- Rich chocolate flavor: Cocoa powder and chocolate chips give these brownies a deep, satisfying taste. A small square feels like a full dessert because the flavor is bold and comforting.
- Nutty crunch: Toasted hazelnuts add texture and make each bite more interesting. They also bring a warm, buttery flavor that pairs well with chocolate.
- Espresso enhances chocolate: Instant espresso powder helps deepen the cocoa flavor. It gives the brownies a bakery-style taste without making them overly complicated.
- Good for portioning: A 9-inch pan makes 12 brownies that are easy to cut and share. This makes them practical for family desserts, lunch box treats, or small gatherings.
- Homemade control: Baking from scratch lets you control the sweetness, salt, and texture. You can make the coffee flavor stronger or milder depending on who will be eating them.
Recipe FAQ
Can I make Hazelnut Espresso Brownies without espresso powder?
Yes, you can leave out the espresso powder if you prefer. The brownies will still taste rich and chocolatey, but the flavor may be a little softer. You can add an extra 1 teaspoon of vanilla extract if you want a warmer flavor.
Do these brownies taste strongly like coffee?
They have a gentle espresso flavor, but the main taste is still chocolate. The espresso mostly makes the cocoa taste deeper and richer. For a milder version, use 1 to 2 teaspoons instead of 1 tablespoon.
Can I use brewed coffee instead of espresso powder?
It is better not to use brewed coffee in this recipe because it adds extra liquid. Extra liquid can change the texture and make the brownies bake differently. Instant espresso powder gives flavor without affecting the batter.
How do I know when fudgy brownies are done?
The edges should be set, and the center should look slightly soft but not wet. A toothpick inserted near the center should come out with moist crumbs. If it comes out completely clean, the brownies may be overbaked.
Can I make these brownies nut-free?
Yes, you can skip the hazelnuts and use extra chocolate chips instead. The brownies will lose the nutty crunch, but they will still be fudgy and flavorful. You can also add toffee bits or shredded coconut if those work for your family.
Why did my brownies crumble when I sliced them?
Brownies often crumble if they are cut while still warm. Let them cool completely so the center has time to set. Using parchment paper and a sharp knife also helps you get cleaner slices.
Can I double this recipe?
You can double the ingredients, but I recommend baking the batter in two 9-inch pans. A larger pan can make the brownies bake unevenly, with dry edges and a soft center. Two pans give you better texture and more dependable results.
A Rich Brownie Worth Slowing Down For
Hazelnut Espresso Brownies are the kind of treat that makes a simple day feel a little more comforting. They are easy to bake, full of deep chocolate flavor, and finished with toasted hazelnuts that add just the right crunch.
The texture is fudgy, the flavor is dependable, and the recipe works well for sharing with family or keeping on hand for sweet snacks. Once these brownies cool and slice cleanly, they become a homemade favorite worth making again.
