Nutella Swirled Banana Blondies Recipe
Introduction
Nutella Swirled Banana Blondies are a delightful twist on classic blondies, combining the sweetness of ripe bananas with rich white and milk chocolate. The luscious Nutella swirl adds a creamy, hazelnut flavor that makes every bite irresistible. Perfect for a cozy treat or sharing with friends.

Ingredients
- 200g White Chocolate
- 175g Unsalted Butter
- 200g Caster Sugar
- 2 Medium Eggs
- 280g Plain Flour
- 20g Cornflour
- 30g Golden Syrup
- 100-150g Ripe Banana (usually one large banana, mashed)
- 200g Milk Chocolate (chopped)
- 100g Hazelnuts (chopped)
- 100-150g Nutella Spread (for decoration)
Instructions
- Step 1: Preheat the oven to Gas Mark 4 / 180ºC and line a 9×9″ square tin with parchment paper.
- Step 2: Melt the unsalted butter and white chocolate together in short bursts in the microwave, stirring well between each to prevent splitting, until smooth.
- Step 3: Stir in the caster sugar until combined.
- Step 4: Add the mashed banana, eggs, and golden syrup, stirring until fully incorporated.
- Step 5: Mix in the plain flour and cornflour until no flour is visible. Then fold in the chopped milk chocolate and hazelnuts evenly.
- Step 6: Pour the batter into the prepared tin. Swirl through the Nutella and sprinkle additional chopped hazelnuts on top for decoration.
- Step 7: Bake for 25-30 minutes, checking for a slight wobble in the center. Depending on your oven, bake time may vary, so check every 2-3 minutes near the end.
- Step 8: Allow the blondies to cool completely in the tin, then chill in the fridge for 3-4 hours or overnight to set.
- Step 9: Slice and enjoy your delicious Nutella Swirled Banana Blondies.
Tips & Variations
- For extra texture, toast the hazelnuts before chopping to bring out their flavor.
- Use very ripe bananas to enhance the sweetness and moisture of the blondies.
- If you prefer a more intense Nutella flavor, add an extra swirl on top before baking.
- Swap hazelnuts for walnuts or pecans if you prefer a different nutty taste.
Storage
Store the blondies in an airtight container in the fridge for up to 4 days. Reheat briefly in the microwave if you prefer them warm, or enjoy straight from the fridge for a fudgier texture. They can also be frozen for up to 2 months; thaw in the fridge before serving.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I make these blondies without nuts?
Yes, you can omit the hazelnuts if you have allergies or prefer a nut-free version. The blondies will still be delicious and chocolaty.
Can I use regular syrup instead of golden syrup?
While golden syrup adds a unique flavor and moisture, you can substitute with light corn syrup or honey in equal amounts for a similar effect.
PrintNutella Swirled Banana Blondies Recipe
Delight in these Nutella Swirled Banana Blondies, a luscious twist on classic blondies featuring mashed ripe banana, chunks of milk chocolate, chopped hazelnuts, and generous swirls of creamy Nutella. Perfectly moist and sweet with a slight crunch, these blondies are an irresistible treat for any chocolate and nut lover.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 4 hours 45 minutes (including chilling time)
- Yield: 16 square blondies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
Chocolate and Butter Mixture
- 200g White Chocolate
- 175g Unsalted Butter
Wet Ingredients
- 200g Caster Sugar
- 2 Medium Eggs
- 100–150g Ripe Banana, mashed (about 1 large banana)
- 30g Golden Syrup
Dry Ingredients
- 280g Plain Flour
- 20g Cornflour
Add-ins and Decoration
- 200g Milk Chocolate, chopped
- 100g Hazelnuts, chopped, plus extra for decoration
- 100–150g Nutella Spread (for swirling and decorating)
Instructions
- Preheat and Prepare Pan: Preheat your oven to Gas Mark 4 / 180ºC. Line a 9×9 inch square baking tin with parchment paper to ensure easy removal of the blondies after baking.
- Melt Butter and White Chocolate: Place unsalted butter and white chocolate in a microwave-safe bowl. Heat in short bursts, stirring well between each burst, until the mixture is smooth and fully melted to prevent splitting.
- Add Sugar: Stir the caster sugar into the melted butter and white chocolate mixture until well combined.
- Incorporate Wet Ingredients: Mix in the mashed ripe banana, eggs, and golden syrup until fully combined, creating a smooth batter.
- Add Dry Ingredients and Mix-ins: Gradually fold in the plain flour and cornflour until no flour streaks remain. Stir through chopped milk chocolate and chopped hazelnuts evenly throughout the batter.
- Pour and Swirl Nutella: Transfer the batter into the prepared baking tin and spread evenly. Drop spoonfuls of Nutella over the top and use a knife or skewer to gently swirl it into the batter for a marbled effect. Decorate with additional chopped hazelnuts.
- Bake: Bake in the preheated oven for 25-30 minutes. The blondies are done when a slight wobble remains in the center. Check doneness every 2-3 minutes after 25 minutes as baking times may vary based on your oven.
- Cool and Set: Allow the blondies to cool completely in the tin. For best results, refrigerate the blondies for 3-4 hours or overnight to set properly before slicing.
- Serve: Once chilled and firm, slice into squares and enjoy your Nutella Swirled Banana Blondies!
Notes
- Ensure the white chocolate and butter are melted gently to avoid seizing.
- Ripe bananas add natural sweetness and moisture — the riper, the better.
- Swirling Nutella into the batter creates beautiful marbling and adds extra flavor.
- Chilling the blondies after baking helps achieve clean slices and enhances flavor.
- Store leftovers in an airtight container in the fridge for up to 4 days.
Keywords: Nutella blondies, banana blondies, chocolate hazelnut dessert, baked blondies, banana chocolate dessert

