Name: Chocolate Hazelnut Thumbprint Cookies Recipe
Prep time: 15 min
Cook time: 12 min
Total time: 35 min
Cuisine: American
Ingredients: 1 cup salted butter (softened); 1 tablespoon ground flax seed; 2 1/2 tablespoons water; 2/3 cup granulated sugar; 1 teaspoon vanilla extract; 1/3 cup chocolate hazelnut butter (homemade or store-bought); 2 cups all purpose flour (spooned and leveled); 1/4 cup cocoa powder; 1 teaspoon cornstarch; 1/2 cup dry toasted and unsalted hazelnuts (roughly chopped); 1/4 cup additional dry toasted and unsalted hazelnuts (roughly chopped; optional for sprinkling); 12-15 hazelnuts (cut in half; optional for topping)

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I absolutely adore making and sharing these Chocolate Hazelnut Thumbprint Cookies Recipe whenever I want to treat myself and friends to something truly special. These cookies have that perfect balance of rich chocolate flavor combined with the toasty crunch of hazelnuts, crowned by a luscious dollop of chocolate hazelnut butter right in the center. Every bite feels like a little moment of joy, giving me both the comfort of a classic cookie and the sophisticated twist of nutty chocolate. They are surprisingly easy to make, and once you try them, I guarantee you'll want to keep this recipe on hand for all your baking adventures.

Why You'll Love This Chocolate Hazelnut Thumbprint Cookies Recipe

For me, the magic of this recipe lies in its deeply satisfying flavor profile. The cocoa powder in the dough provides a gentle chocolate presence that is not overpowering, while the toasted hazelnuts add a wonderful crunch and warmth that complements the richness beautifully. The final touch of chocolate hazelnut butter in each thumbprint creates a creamy, decadent surprise that sets these cookies apart from your everyday treat. I love how every element works harmoniously together to offer layers of flavor and texture that keep me coming back for more.

Another thing that makes this Chocolate Hazelnut Thumbprint Cookies Recipe a personal favorite is how straightforward it is to prepare. The ingredients are simple and easy to find, and the hands-on steps are satisfying without being fussy or complicated. I find it perfect for a lazy afternoon baking session or a last-minute holiday treat when I want impressive results but without too much effort. These cookies work perfectly for casual family dinners, festive parties, or even as thoughtful homemade gifts. What really sets them apart for me is the fun of making those thumbprints and adding all those little personal touches like sprinkling extra hazelnuts or using my favorite chocolate hazelnut spread.

Ingredients You'll Need

The image shows a top-down view of several white bowls and two sticks of wrapped plant butter arranged neatly on a white marbled background. In the top left corner, there is a large white bowl filled with granulated sugar, beside it on the right are two sticks of plant butter stacked horizontally. Below the sugar is a medium white bowl containing dark brown cocoa powder. Next to it is a small white bowl with white cornstarch, and a small white bowl with dark vanilla extract sits just above that. On the right side is a large white bowl filled with all-purpose flour. Below the flour bowl are two smaller bowls; one holds finely chopped hazelnuts and the other round whole hazelnuts. In the bottom right corner, there is a small glass bowl with a dark brown chocolate hazelnut butter, and a glass bowl with ground flaxseed sits just above it. All ingredients are clearly labeled with black text on white backgrounds. Photo taken with an iphone --ar 4:5 --v 7

To make these cookies, you just need a handful of simple ingredients that each play a vital role in creating the perfect flavor, texture, and appearance. These ingredients keep the recipe approachable, yet result in a depth of taste that feels anything but basic.

Salted butter: Softened butter adds richness and helps create a tender, melt-in-your-mouth cookie texture.
Ground flax seed: Mixed with water to create a flax egg, it’s a clever egg substitute that binds the dough together nicely.
Granulated sugar: Provides the essential sweetness and helps with that slight crisp edge on the cookie.
Vanilla extract: Adds warmth and enhances the overall flavor complexity of the dough.
Cornstarch: Makes the cookies softer and gives them a delicate crumb.
All-purpose flour: The base of the dough that holds everything together with a tender bite.
Cocoa powder: Infuses the dough with a subtle chocolate flavor without overwhelming the hazelnut notes.
Dry toasted hazelnuts: Adding both chopped into the dough for crunch and sprinkled atop for texture contrast and nutty flavor.
Chocolate hazelnut butter: Used as the filling, it adds a rich, creamy layer that is the heart of the thumbprint cookie.
Halved hazelnuts (optional): For gorgeous garnish and a nutty centerpiece.

Directions

Step 1: Preheat your oven to 350°F (175°C). In a small bowl, combine the ground flax seed with 2 ½ tablespoons of water and let it thicken for at least 5 minutes. This acts as an egg substitute to help bind the cookies.

Step 2: Line two baking sheets with parchment paper or simply reuse one sheet after baking. Then, in a large bowl, use a mixer to cream the softened butter and granulated sugar together until the mixture looks light and fluffy—this usually takes about 2 to 3 minutes.

Step 3: Add the thickened flax egg and vanilla extract to the butter and sugar mixture. Beat again until everything is well incorporated. Make sure to scrape the sides of the bowl for an even mix.

Step 4: Sift the flour, cocoa powder, and cornstarch together into the butter mixture using a fine sieve. Gently fold these dry ingredients in with a spatula, mixing until combined. The dough will look a bit shaggy and dry initially but should come together into a thick yet manageable dough.

Step 5: Fold in half a cup of the chopped toasted hazelnuts to add a delicious crunch inside the cookie.

Step 6: Using a 1 ½ tablespoon scoop, portion out 24 fairly even dough balls and roll them smoothly with your hands. Place them spaced evenly (12 balls per sheet) onto your prepared baking sheets.

Step 7: Fill a small bowl with water to dip a rounded teaspoon. Press into the center of each dough ball to create a thumbprint indentation large enough to hold the filling. The water helps prevent the dough from sticking to your spoon.

Step 8: If you like, spread the remaining chopped hazelnuts on a plate and gently press the outer edge of each cookie top into them, adding extra nutty texture and flavor.

Step 9: Bake the cookies for 10 to 12 minutes until the edges are set but not browned. After removing them from the oven, place the whole baking sheet on a wire rack. The cookies will puff up a bit in the oven, so press the centers down again with your teaspoon to re-form the thumbprint.

Step 10: Let the cookies cool on the baking sheet for 10 minutes to firm up. Then add about one teaspoon of chocolate hazelnut butter to each thumbprint and top with a hazelnut half if you have them. This filling step makes the cookies irresistibly creamy and nutty.

Step 11: Serve immediately to enjoy warm, or let the cookies cool completely before transferring them to an airtight container. They keep wonderfully at room temperature for up to 3 days, but I prefer filling them just before serving to avoid them sticking together if stacked.

Servings and Timing

This recipe makes approximately 24 delicious cookies, so it's perfect for sharing or enjoying over several days. The prep time is about 15 minutes, including mixing and shaping, while the baking time takes 10 to 12 minutes. Don't forget to factor in an additional 10 minutes for cooling on the baking sheet. Altogether, you can expect the total time from start to finish to be around 35 minutes. The resting time for the flax egg adds a small waiting period but it's totally worth it for the binding and texture it provides. These cookies hit that sweet spot of quick and rewarding.

How to Serve This Chocolate Hazelnut Thumbprint Cookies Recipe

The image shows four steps of making chocolate dough with nuts, all on a white marbled surface. The first part (top right) has a white bowl filled with dry light brown flour mixture and a black spoon inside. The second part (top left) inside a white bowl shows thick chocolate dough with many small chopped nuts mixed in and the black spoon resting in the bowl. The third part (bottom left) is a baking sheet lined with paper, holding rows of round dough pieces with holes pressed in the middle, all dark brown in color. The last part (bottom right) shows the same dough pieces but now with chopped nuts pressed around the edges, ready to bake. Photo taken with an iphone --ar 4:5 --v 7

When it comes to serving these cookies, I love offering them at room temperature so the chocolate hazelnut butter stays creamy without melting too much. They pair beautifully with a hot cup of coffee or a creamy latte, making an ideal afternoon treat or a sweet finish to a casual meal. If I’m serving them at a party, I’ll arrange them on a pretty platter lined with parchment paper and sprinkle a few extra chopped hazelnuts or cocoa nibs around for a rustic, inviting look.

For special occasions like holiday gatherings, I sometimes add a dusting of powdered sugar or a light drizzle of melted chocolate over the cookies. It instantly elevates their visual appeal and adds an extra layer of indulgence. These cookies feel right at home on festive dessert tables, afternoon teas, or family cookie swaps. Because the flavors are rich yet approachable, they suit both kids and adults, making them a real crowd pleaser.

If you want to get a little creative, I recommend serving these thumbprint cookies with a side of fresh berries or a scoop of vanilla ice cream to complement the nutty, chocolaty notes. I find that this balance of cool, creamy, and crunchy really enhances the experience and makes each bite feel like a little celebration. No matter how you serve them, these cookies always feel like a warm, welcoming treat.

Variations

One of the best things about this Chocolate Hazelnut Thumbprint Cookies Recipe is how adaptable it is to different tastes and dietary needs. If you want to make them gluten-free, I’ve had great success swapping the all-purpose flour for a reliable gluten-free flour blend that measures cup-for-cup. The texture stays just as tender, and the flavor remains wonderfully rich. For those who prefer a vegan version, sticking with the flax egg works perfectly, and you could use a vegan butter substitute to keep everything plant-based without losing any of the lusciousness.

Flavor-wise, I sometimes like to switch things up by adding a pinch of cinnamon or espresso powder to the dough. Both add a surprising depth that pairs deliciously with chocolate and hazelnuts. Another variation is using almond butter or peanut butter instead of chocolate hazelnut butter in the thumbprint, which offers a delightful change while maintaining that creamy center. You can also try subbing walnuts or pecans for hazelnuts if you want a different nutty twist.

If you feel adventurous, these cookies can be baked a bit longer for a crisper texture or a little less for a softer, chewier bite. I’ve even tried chilling the dough before baking to develop more intense flavor and a more delicate crumb. The great thing is this recipe is forgiving and can easily be tailored to your preferred cookie style.

Storage and Reheating

Storing Leftovers

I generally store any leftover cookies in an airtight container at room temperature, making sure to separate layers with parchment or wax paper to prevent sticking. They stay fresh and flavorful for up to 3 days this way. If you plan to keep them longer, I recommend holding off on adding the chocolate hazelnut butter until serving to avoid sogginess and sticking issues.

Freezing

You can definitely freeze these cookies if you want to prepare them in advance or save extras. I like to freeze the fully baked cookies without the chocolate hazelnut butter filling by placing them in a single layer on a baking sheet first, then transferring them to a freezer-safe container or bag once firm. They keep well frozen for up to 3 months. When ready to enjoy, just thaw the cookies at room temperature and add the chocolate hazelnut butter fresh.

Reheating

To gently reheat, I find placing the cookies in a warm (not hot) oven at around 300°F for 5 minutes works beautifully to revive their softness and bring the chocolate butter filling to a lovely creamy consistency. Avoid microwaving them straight as it can cause uneven warming and sometimes a greasy texture. Reheating also helps restore that freshly baked feeling if your cookies have been stored chilled.

FAQs

Can I use regular eggs instead of flax seed?

Yes! If you’re not allergic to eggs, you can substitute one regular egg for the flax egg in this recipe. Just beat the egg lightly and add it in Step 2 along with the butter and sugar. The texture and taste will still be fantastic.

Is it necessary to toast the hazelnuts?

Toasting the hazelnuts is highly recommended because it enhances their flavor and gives a lovely nutty crunch to the cookies. You can do this easily by roasting them in a dry pan or in the oven until fragrant and golden, but if you’re in a hurry, pre-toasted hazelnuts from the store will work too.

Can I make the dough ahead of time?

Absolutely! The dough can be made up to 24 hours in advance. Just wrap it tightly in plastic wrap and keep it in the refrigerator. When you’re ready to bake, let it soften slightly for easier shaping and proceed as usual.

What if I don’t have chocolate hazelnut butter? Can I use something else?

If you don’t have chocolate hazelnut butter, you can substitute with creamy chocolate spread, plain hazelnut butter, or even peanut butter for a different but still delicious flavor. Just keep in mind that the final flavor will vary depending on what you choose.

How do I prevent the cookies from sticking together after filling them?

Because the chocolate hazelnut butter can make the cookies sticky, I recommend only filling the cookies you plan to serve right away. If you need to store leftovers filled, keep the cookies single-layered with parchment in between to avoid sticking or wait to fill until right before serving.

Conclusion

I hope you feel inspired to dive into this Chocolate Hazelnut Thumbprint Cookies Recipe as much as I have. It’s been such a joyful recipe to bake and share, one that never fails to bring smiles and warm moments around the table. Whether you’re making them for a special occasion, a cozy afternoon, or holiday gifting, these cookies have a way of making even the simplest gatherings feel a little more magical. Give them a try – I promise you’ll fall in love with this perfect marriage of chocolate and hazelnut bliss!