This recipe for chocolate hazelnut thumbprint cookies has been a holiday favorite for my family for years. I first made them during a weekend baking marathon when I wanted something that combined my two favorite flavors: deep cocoa and toasty hazelnut with a smooth, nutty filling. The first batch disappeared before the oven had even cooled; my partner kept saying the texture reminded him of a soft chocolate cookie at a bakery, while the Nutella center tasted like a bite of pure nostalgia. These cookies strike a balance between tender crumb and crisp edged base, and the chopped hazelnut coating gives each bite a lively crunch that contrasts beautifully with the silky center.

I especially love these for gifting because they travel well and deliver a big flavor payoff without complicated techniques. They feel festive, but they are also approachable for a busy afternoon: the dough can be made a day ahead, and the ganache comes together in minutes. If you want to impress non-bakers, make a small batch and watch people light up the moment they taste the warm, chocolatey shell with creamy Nutella nestled in the middle.

Ingredients

• All-purpose flour: 1 1/2 cups. Spoon into the measuring cup and level it off for accuracy. This provides structure without making the cookie tough; King Arthur or Gold Medal work well.
• Cocoa powder: 1/2 cup. Use unsweetened Dutch-process for a richer, less acidic chocolate flavor, or natural cocoa for a sharper bite.
• Baking powder: 1/2 teaspoon. Gives a slight lift so the cookies are tender rather than dense.
• Fine sea salt: 1/4 teaspoon. Balances sweetness and enhances the chocolate notes.
• Unsalted butter: 1/2 cup, at room temperature. Properly softened butter gives the dough its tender crumb and helps trap air during creaming; plug in your favorite European-style butter for added richness.
• Light brown sugar: 1/4 cup and granulated sugar: 1/2 cup. The brown sugar adds a hint of molasses and chew, while granulated sugar helps with crisp edges.
• Large egg yolk: 1. Adds richness and binder without extra liquid from a whole egg.
• Vanilla extract: 1 teaspoon. Use pure vanilla for the best aromatic lift.
• Milk: 1 tablespoon. Helps the dough come together; whole milk will yield a slightly richer dough.
• Hazelnuts, finely chopped: 3/4 cup. Toast them briefly for more flavor, then chop finely to coat the cookies evenly.
• Nutella: 1/2 cup for the filling. The ready-made spread gives a perfectly balanced hazelnut-chocolate flavor.
• Heavy cream: 1/4 cup. Heated and mixed with Nutella to create a soft ganache that firms as it cools.

Instructions

Prepare the dry mix: Whisk together 1 1/2 cups all-purpose flour, 1/2 cup cocoa powder, 1/2 teaspoon baking powder, and 1/4 teaspoon fine sea salt in a medium bowl. Sifting is optional but helps remove any lumps from cocoa. Set the dry mix aside while you cream the butter and sugars; this prevents overmixing later. Cream butter and sugars: In a large bowl or stand mixer fitted with the paddle, beat 1/2 cup softened unsalted butter with 1/4 cup light brown sugar and 1/2 cup granulated sugar on medium speed until light and fluffy, about 2 to 3 minutes. Scrape down the bowl once so that all ingredients are evenly aerated; proper creaming builds structure for tender cookies. Add yolk and flavor: Beat in 1 large egg yolk, 1 teaspoon vanilla extract, and 1 tablespoon milk until smooth. The yolk enriches without excess moisture. If your butter was slightly warm, work quickly to avoid any separation. Combine to form dough: With the mixer on lowest speed, add the dry mix in two additions until it is just incorporated. The dough will look crumbly; press it together with your hands into a smooth ball. Avoid overmixing to keep the texture tender. Wrap the dough in plastic and chill at least 1 hour or overnight for deeper flavor and easier handling. Shape and chill: Let chilled dough sit 10 to 15 minutes at room temperature so it is scoopable. Portion 1 tablespoon (about 20 g) per cookie and roll into smooth balls. Roll each ball in 3/4 cup finely chopped toasted hazelnuts until well coated. Place on parchment-lined baking sheets, leaving 1 1/2 inches between cookies. Press an indentation into each cookie with your thumb or the handle end of a wooden spoon. Refrigerate shaped cookies another 30 minutes so they hold their shape during baking. Bake: Preheat the oven to 350 degrees F. Bake cookies for 10 to 12 minutes until edges are set and centers still slightly soft. If indentations puff up, gently press them down again while cookies are warm. Cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely. Make the Nutella ganache: Put 1/2 cup Nutella into a heatproof bowl. Heat 1/4 cup heavy cream in a small saucepan until just simmering but not boiling. Pour the hot cream over the Nutella and let sit 5 minutes. Stir until silky and smooth; allow to cool until slightly thickened, then transfer to a piping bag. The ganache will be softer than classic ganache but firms up as it cools. Fill and set: Pipe the ganache into the cooled cookie centers. Let set at room temperature until the filling holds its shape, about 30 to 60 minutes. Store in an airtight container once fully set.

Storage Tips

Store baked cookies at room temperature in an airtight container layered with parchment paper for up to 3 days. If your home is warm, place the container in the refrigerator and allow cookies to come to room temperature before serving; chilled ganache will firm more quickly and cut cleaner. For long-term storage, freeze fully cooled cookies flat in a single layer on a tray for 1 hour then transfer to a freezer-safe container with parchment between layers; they will keep for up to 3 months. When ready to serve, thaw at room temperature for about 30 minutes. If you freeze unbaked dough balls, bake from frozen adding an extra 1 to 2 minutes to the bake time.

Ingredient Substitutions

If hazelnuts are unavailable, finely chopped almonds or pecans work well though they change the flavor profile. For a dairy-free version, substitute vegan butter and use a dairy-free chocolate-hazelnut spread; note texture will differ. Swap heavy cream for full-fat coconut cream if you want a slightly tropical note, but expect a faint coconut flavor. To make them less sweet, reduce granulated sugar to 1/3 cup and increase brown sugar to 1/3 cup for moisture retention. For a more intense chocolate character, replace 2 tablespoons of flour with 2 tablespoons of extra cocoa powder, but add a teaspoon of milk if the dough becomes too dry.

Serving Suggestions

Serve on a platter with a dusting of cocoa or a few whole toasted hazelnuts for garnish. These pair beautifully with espresso or a nutty tea like rooibos. For holiday platters, alternate them with shortbread and spiced cookies for color contrast. Offer small tins of these as gifts, adding a layer of parchment and tissue paper for a polished presentation. For dessert courses, pair two cookies with a scoop of vanilla ice cream and a drizzle of warm chocolate sauce for an indulgent finish.

Cultural Background

Thumbprint-style confections appear in many culinary traditions, from Scandinavian jam-filled cookies to Mediterranean nut-centered pastries. Combining chocolate and hazelnut is a flavor marriage popularized in Europe, most famously through gianduja in Italy and the widespread appeal of hazelnut chocolate spreads. These cookies feel like a cross between a classic shortbread and a filled European biscuit, drawing from traditions that prioritize texture contrasts and simple, high-quality ingredients.

Seasonal Adaptations

In winter, add a pinch of warm spices such as cinnamon and a touch of orange zest to the dough for festive depth. For spring or summer, switch the filling to a raspberry or apricot jam instead of Nutella for a bright counterpoint. Around autumn, fold 1/4 teaspoon of ground cardamom into the dry mix and finish with a light sprinkle of flaky sea salt on the ganache to highlight the toasted-nut flavors.

Meal Prep Tips

Make the dough the day before and refrigerate, rolling and chilling the shaped cookies on baking sheets the next day before baking. Prepare the ganache while cookies cool, then fill. This staged approach saves time the day you want to serve them. Use labeled, airtight containers for storing both filled and unfilled cookies, and pack them with paring layers of parchment when transporting. For party prep, bake several trays and freeze unfilled cookies; fill from frozen after a short thaw for freshly finished presentation.

These chocolate hazelnut thumbprint cookies are one of those recipes that rewards patience and experimentation. Share them with friends, adapt the filling to your mood, and enjoy the smiles they bring. Happy baking and don’t forget to toast the hazelnuts for the best flavor!