This tray of Nutella brownies has been my go-to for celebrations, last-minute desserts, and the afternoons when the house needs a little cheering. I first discovered this combination on a rainy weekend when I had a jar of Nutella that needed a purpose and a craving for something deeply chocolatey but not cakey. The result was a dense, fudgy brownie with a silky chocolate-hazelnut note throughout and glossy swirls on top that make every slice feel a little indulgent.

What makes these special is how effortlessly the Nutella integrates into the batter: you get true hazelnut flavor in every bite without adding extra steps. I love the contrast between the deep dark chocolate I melt into the batter and the sweeter creamy Nutella ribbons. My kids call them "fancy brownies" because of the swirls, and friends always ask for the recipe at parties because they look and taste like something from a bakery, yet they come together in one bowl.

Ingredients

• Unsalted butter: 1/2 cup (4 tablespoons). Use real butter for depth of flavor—I like Plugrá or Kerrygold when available. The fat gives the brownies their tender, fudgy crumb.
• Dark chocolate: 3 oz finely chopped (about 1/2 cup). Choose a 50–70% cocoa bar or good quality chocolate chips. The dark chocolate balances Nutella's sweetness and builds a richer chocolate backbone.
• Granulated sugar: 2/3 cup. Provides structure and a glossy top; do not replace entirely with brown sugar or the texture will change.
• Vanilla extract: 2 teaspoons. Small but important—vanilla amplifies both chocolate and hazelnut notes.
• Eggs: 2 large eggs plus 1 large egg yolk (use the whites for another recipe). Room temperature eggs emulsify better and give a smoother batter.
• Nutella: 1 1/4 cups total—3/4 cup folded into the batter, 1/2 cup reserved for swirling. One standard 13 oz jar has enough for both.
• All-purpose flour: 1 cup. Spoon into the measuring cup and level off for accuracy to keep brownies fudgy, not cakey.
• Salt: 1/4 teaspoon. A small amount sharpens the chocolate flavors—use fine sea salt or kosher salt measured finely.

Instructions

Preheat and prepare the pan: Preheat the oven to 350°F (180°C) or 325°F (170°C) for convection. Line an 8x8 inch pan with parchment paper or foil leaving an overhang for easy removal. A 9x9 inch pan will work but yields thinner brownies and a shorter bake time. Melt chocolate and butter: Place the chopped dark chocolate and butter in a microwave-safe bowl. Heat in 30–45 second bursts on medium, stirring between bursts until smooth. Alternatively, use a double boiler over simmering water—stir constantly to avoid overheating. The goal is a glossy, lump-free mixture. Incorporate sugar and Nutella: Whisk the granulated sugar into the warm chocolate-butter until combined. Add 3/4 cup Nutella and whisk until smooth. If your Nutella is stiff, microwave the jar for 30–60 seconds to loosen it—this makes mixing and swirling much easier. Add eggs and vanilla: In a small bowl, whisk together the two eggs and the extra yolk. Temper the eggs by whisking a couple of tablespoons of the warm chocolate mixture into the eggs, then whisk the egg mixture back into the main bowl. Stir in the vanilla. Tempering prevents scrambled eggs and ensures a glossy batter. Fold in dry ingredients: Using a rubber spatula, gently fold in the flour and salt until just combined. Avoid overmixing—stop when you no longer see streaks of flour. The batter should be thick, glossy and slightly sticky. Transfer and swirl: Pour the batter into the prepared pan and smooth the top. Drop spoonfuls (1–2 teaspoons each) of the remaining 1/2 cup Nutella on the surface in a grid pattern—about 4 rows of 4. Use a toothpick or skewer to drag through the dollops in a figure-eight or swirl pattern to create marbling without fully mixing the Nutella away. Bake: Bake on the middle rack for 30–35 minutes for an 8x8 pan, or 22–27 minutes for a 9x9 pan. Look for shiny, cracked edges and a slightly soft center that sets as it cools—a toothpick inserted in the center should come out with a few moist crumbs, not wet batter. Overbaking will dry them out. Cool and slice: Cool fully in the pan until the pan is no longer warm, then lift brownies using the parchment overhang to a cutting board. Use a sharp knife and wipe it clean between cuts for neat squares. For the cleanest edges, chill briefly before slicing.

Storage Tips

Store cooled squares in an airtight container at room temperature for up to 4 days. For longer storage, freeze in a single layer on a baking sheet until firm, then stack with parchment between layers inside a freezer-safe container for up to 3 months. To serve, thaw at room temperature for about an hour or warm briefly in a 300°F oven for 8–10 minutes to revive that fresh-baked texture. Avoid refrigerating for long periods, which can dry them out.

Ingredient Substitutions

For a gluten-free version, substitute a 1-to-1 gluten-free flour blend—expect a slightly different crumb but still excellent fudginess. Swap dark chocolate for semi-sweet chips if you prefer a sweeter and slightly softer flavor profile. If Nutella isn't available, other commercial chocolate-hazelnut spreads work well; avoid runny homemade spreads. To reduce sweetness, use 60–70% cacao chocolate and slightly less Nutella on top.

Serving Suggestions

Serve warm with a scoop of vanilla ice cream or a dollop of lightly sweetened whipped cream and a sprinkle of toasted hazelnuts for crunch. For a festive presentation, dust with cocoa powder or top with flaky sea salt to balance the sweetness. These squares pair beautifully with black coffee, milk, or dessert wine for evening entertaining.

Cultural Background

While brownies are a classic American treat dating back to the early 20th century, the addition of Nutella brings an Italian-inspired hazelnut-chocolate element to the confection. Nutella itself—created in Italy in the mid-20th century—has become a global pantry staple. Combining these traditions gives a modern twist to a beloved comfort dessert, blending brownie richness with Nutella’s distinctive flavor.

Seasonal Adaptations

In the holidays, stir in a teaspoon of cinnamon or a pinch of espresso powder to deepen the chocolate notes. For summer gatherings, make mini brownie cups topped with fresh berries and a small swirl of Nutella. In colder months, fold in chopped toasted hazelnuts or a spoonful of caramel for a cozy variation that complements the Nutella’s nuttiness.

Meal Prep Tips

Double the batch and bake in two pans for freezer-ready portions—slice into squares, flash-freeze, and store in labeled freezer bags. For lunches or snacks, wrap individual squares in parchment and keep them in a fridge-safe lunchbox (bring to room temp before eating). If preparing ahead for a party, bake and cool, then keep wrapped until 1–2 hours before serving to let them regain softness.

These Nutella brownies are one of those recipes that make your kitchen smell like comfort and celebration. They’re forgiving, adaptable, and always disappear quickly—try making a test batch and tweak the swirl pattern until it looks just right for you.