Nutella Swirl Brownies

Last Tuesday, with a mountain of homework looming and two hungry kids circling the kitchen, I whipped up a batch of Nutella Swirl Brownies in under forty minutes. It’s become my secret weapon for turning a frantic weeknight into something that feels a bit special, without any of the fuss.

Recipe Overview

• Prep Time: 10 minutes
• Cook Time: 25 minutes
• Total Time: 35 minutes
• Servings: 16 squares
• Difficulty: Easy

Why You’ll Love This Nutella Swirl Brownies

• Minimal Cleanup: You only need one bowl and a spatula — the Nutella jar doubles as your measuring cup for the swirl, so there’s less washing up.
• Weeknight Speed: From start to oven in ten minutes flat. I make this at least once a week — it’s become a family favourite for after-school homework sessions.
• Make-Ahead Friendly: Bake the brownies on Sunday, store them in the fridge, and slice off squares all week. They actually taste better on day two, just like a Dirty Chai Latte.
• Pantry Staples: You likely have everything already — butter, sugar, eggs, flour, and that jar of Nutella hiding at the back of the cupboard.
• Foolproof Texture: The edges stay fudgy while the centre remains soft, and the Nutella swirl creates pockets of melted hazelnut goodness in every bite, much like our Fudgy Dark Chocolate Brownies.online/classic-chocolate-cream-pie/”>Classic Chocolate Cream Pie.online/classic-oreo-crust-cheesecake/”>Classic Oreo Crust Cheesecake.online/burnt-basque-cheesecake/”>Burnt Basque Cheesecake.

Nutella Swirl Brownies

15 min prep  ·  25 min cook  ·  16 servings

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Ingredients You’ll Need

• 150g unsalted butter, melted
• 200g caster sugar
• 2 large eggs, at room temperature
• 1 tsp vanilla extract
• 100g plain flour
• 40g cocoa powder, sifted
• ¼ tsp salt
• 200g Nutella (about half a standard jar)
• 1 tbsp milk (optional, for loosening the Nutella)

Tip: For the richest flavour, use a good-quality cocoa powder. I’ve been making this for over 7 years, and it never disappoints — the secret is not overmixing the batter once the flour goes in.

How to Make Nutella Swirl Brownies

1. Preheat and prepare: Set your oven to 180°C (fan 160°C). Line a 20cm square baking tray with parchment paper, leaving some overhang for easy lifting later. The paper should feel crisp and snug against the edges.
2. Mix the wet ingredients: In a large bowl, whisk the melted butter and caster sugar together until they look glossy and slightly thickened — about one minute. The mixture should feel warm from the butter and smell sweet and buttery.
3. Add the eggs and vanilla: Crack in the eggs one at a time, whisking vigorously after each addition. The batter will turn pale and creamy, and you’ll hear a soft slapping sound as it thickens. Stir in the vanilla extract.
4. Fold in the dry ingredients: Sift the flour, cocoa powder, and salt over the wet mixture. Use a spatula to fold gently — stop as soon as you can no longer see white streaks of flour. The batter should be thick, dark, and smell deeply of chocolate.
5. Pour and prepare the swirl: Scrape the brownie batter into the lined tray and spread it evenly with the spatula. In a small bowl, stir the Nutella with a tablespoon of milk if it feels stiff — it should be just thin enough to drizzle. Drop spoonfuls of Nutella across the surface in a random pattern.
6. Create the swirl: Take a butter knife or skewer and drag it through the Nutella and batter in a figure-eight motion. Don’t overdo it — six or seven passes are enough. You want distinct ribbons of Nutella, not a muddy mess. The surface should look marbled, with dark brown and lighter brown bands.
7. Bake: Slide the tray into the centre of the oven and bake for 22–25 minutes. At 20 minutes, check by inserting a toothpick into the centre — it should come out with a few moist crumbs clinging to it, not wet batter. The edges will look set and slightly cracked, and the kitchen will smell like a chocolate shop.
8. Cool completely: Place the tray on a wire cooling rack and let the brownies cool in the tray for at least 20 minutes. This is the hardest part — the brownies will continue to set as they cool. Lifting them too early will cause them to break apart. Once cool, lift the parchment overhang to transfer the slab to a cutting board.

Tips From My Kitchen

• Room temperature eggs matter: Cold eggs seize the melted butter, making the batter stiff and hard to spread. Let your eggs sit on the counter for fifteen minutes before starting, or place them in a bowl of warm water for five minutes. The batter will be silkier and easier to swirl.
• Don’t skip the parchment overhang: Cutting brownies directly from the tray often scratches the non-stick coating and makes neat slices nearly impossible. Leaving a two-inch overhang on two sides lets you lift the whole slab out cleanly, like removing a cake from a tin.
• Use a hot knife for clean slices: Run your knife under hot water, wipe it dry, then slice. The heat melts through the brownie without dragging the Nutella swirl. Wipe the blade between each cut for perfectly edged squares.
• Underbake slightly for fudgy centres: If you prefer gooey brownies, pull them out at 22 minutes when the toothpick shows wet crumbs. The residual heat in the tray will finish the cooking. For cakier brownies, leave them for the full 25 minutes until the toothpick comes out clean.
• Store with a slice of bread: Place a piece of fresh bread in the storage container with the brownies — the bread absorbs excess air and keeps the brownies soft for up to five days. Replace the bread slice every two days.

Equipment You’ll Need

• Stand mixer or hand mixer (optional — a whisk works fine)
• 20cm square baking tray
• Parchment paper
• Wire cooling rack
• Large mixing bowl
• Spatula or wooden spoon
• Butter knife or skewer for swirling

Common Mistakes to Avoid

• Overcrowding the pan: Using a tray larger than 20cm spreads the batter too thin, resulting in dry, crisp brownies. Stick to the recommended size so the batter sits deep enough to stay fudgy in the centre.
• Wrong temperature: Baking at too high a temperature sets the edges before the centre cooks, leaving you with a raw middle. Always use 180°C (fan 160°C) and invest in an oven thermometer if your oven runs hot or cold.
• Skipping the rest time: Cutting into warm brownies creates a crumbly mess. The structure needs time to firm up as it cools — rushing this step turns your beautiful slab into a pile of chocolate rubble. Wait the full 20 minutes on the wire rack.

Delicious Variations to Try

• Spicy Version: Add ½ teaspoon of cayenne pepper and ½ teaspoon of cinnamon to the flour mixture. The warmth of the spice cuts through the sweetness of the Nutella beautifully, giving each bite a gentle kick at the end.
• Vegetarian/Vegan Option: Replace the eggs with two tablespoons of ground flaxseed mixed with six tablespoons of water (let it sit for five minutes to gel). Swap the butter for a plant-based margarine, and use a vegan chocolate spread instead of Nutella, as standard Nutella contains skimmed milk powder.
• Different Protein: Stir 50g of chopped toasted hazelnuts or walnuts into the batter before pouring it into the tray. The nuts add crunch and contrast against the soft, fudgy texture — just toast them lightly first to bring out their oils.

What to Serve With Nutella Swirl Brownies

• A scoop of vanilla ice cream to balance the richness
• A glass of cold milk — the classic pairing for a reason
• Fresh strawberries or raspberries for a tart contrast
• A drizzle of warm caramel sauce for extra indulgence

Frequently Asked Questions

Nutella Swirl Brownies

Fudgy chocolate brownies swirled with creamy Nutella, baked to perfection with a crackly top and gooey center.

Print Recipe
Pin Recipe

Prep Time 15 minutes mins

Cook Time 25 minutes mins

Total Time 40 minutes mins

Servings: 16 servings

Course: Dessert

Cuisine: American

Calories: 290

Ingredients
Method
Notes

Ingredients

  

• 150 g unsalted butter melted
• 200 g caster sugar
• 2 large eggs at room temperature
• 1 tsp vanilla extract
• 100 g plain flour
• 40 g cocoa powder sifted
• ¼ tsp salt
• 200 g Nutella about half a standard jar
• 1 tbsp milk optional, for loosening the Nutella

Method

 

1. Preheat and prepare: Set your oven to 180°C (fan 160°C). Line a 20cm square baking tray with parchment paper, leaving some overhang for easy lifting later. The paper should feel crisp and snug against the edges.
2. Mix the wet ingredients: In a large bowl, whisk the melted butter and caster sugar together until they look glossy and slightly thickened — about one minute. The mixture should feel warm from the butter and smell sweet and buttery.
3. Add the eggs and vanilla: Crack in the eggs one at a time, whisking vigorously after each addition. The batter will turn pale and creamy, and you’ll hear a soft slapping sound as it thickens. Stir in the vanilla extract.
4. Fold in the dry ingredients: Sift the flour, cocoa powder, and salt over the wet mixture. Use a spatula to fold gently — stop as soon as you can no longer see white streaks of flour. The batter should be thick, dark, and smell deeply of chocolate.
5. Pour and prepare the swirl: Scrape the brownie batter into the lined tray and spread it evenly with the spatula. In a small bowl, stir the Nutella with a tablespoon of milk if it feels stiff — it should be just thin enough to drizzle. Drop spoonfuls of Nutella across the surface in a random pattern.
6. Create the swirl: Take a butter knife or skewer and drag it through the Nutella and batter in a figure-eight motion. Don’t overdo it — six or seven passes are enough. You want distinct ribbons of Nutella, not a muddy mess. The surface should look marbled, with dark brown and lighter brown bands.
7. Bake: Slide the tray into the centre of the oven and bake for 22–25 minutes. At 20 minutes, check by inserting a toothpick into the centre — it should come out with a few moist crumbs clinging to it, not wet batter. The edges will look set and slightly cracked, and the kitchen will smell like a chocolate shop.
8. Cool completely: Place the tray on a wire cooling rack and let the brownies cool in the tray for at least 20 minutes. This is the hardest part — the brownies will continue to set as they cool. Lifting them too early will cause them to break apart. Once cool, lift the parchment overhang to transfer the slab to a cutting board.

Notes

Let the brownies cool completely in the pan before cutting to avoid crumbling. If Nutella is too thick, stir in 1 tablespoon of milk to make drizzling easier.

I love hearing how these brownies turn out in your kitchen — drop a comment below and let me know if your family devoured them as fast as mine does. And if you’re looking for another quick treat that works on busy nights, my Quick No Bake Banana Pudding is just as speedy, or try the Easy Lemon Meringue Pie when you want something tangy instead of chocolatey. Happy baking!

Nutella Swirl Brownies

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