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Easy Nutella Blondies (Soft, Fudgy & One Bowl) Recipe

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3.8 from 11 reviews

These Easy Nutella Blondies are soft, fudgy, and irresistibly delicious, made in one bowl for simple prep. Swirled with rich Nutella, they bake to a perfect gooey center and crisp edges, making a perfect treat for any occasion.

Ingredients

Blondie Batter

  • 225 g butter (melted and cooled)
  • 340 g demerara or brown sugar
  • 2 eggs
  • 285 g plain flour

Nutella Swirl

  • 200 g Nutella (about half a jar)

Instructions

  1. Preheat and prepare pan: Preheat your oven to 180ºC (350ºF). Line a 23 cm (9-inch) square baking pan with baking paper to prevent sticking and for easy removal.
  2. Mix sugar and eggs: In a medium bowl, whisk together the demerara or brown sugar and eggs until the mixture is smooth and well combined, which helps create a tender texture.
  3. Add melted butter: Melt the butter using a small saucepan or microwave, then allow it to cool slightly so it doesn’t cook the eggs. Pour the cooled butter into the egg and sugar mixture and whisk until smooth and fully incorporated.
  4. Add flour: Gradually add the plain flour to the wet ingredients and mix just until combined. The batter will be thick, which contributes to the blondie’s soft and fudgy texture.
  5. Transfer batter and swirl Nutella: Spoon the thick batter into the prepared baking pan, smoothing the surface with the back of a spoon or spatula. Add spoonfuls of Nutella on top and use a knife or skewer to gently swirl it through the batter without overmixing, keeping the swirls visible for a marbled effect.
  6. Bake: Place the pan in the preheated oven and bake for 25–30 minutes. The blondies are done when the edges are set, but the center remains slightly soft and a knife inserted comes out with moist crumbs.
  7. Cool and cut: Remove the pan from the oven and allow the blondies to cool completely in the pan. Once cooled, slice into 9 equal squares and serve.

Notes

  • Use demerara or brown sugar for a deeper caramel flavor and moist texture.
  • Do not overmix the Nutella swirl to maintain beautiful marbling and varied texture.
  • Make sure the butter is cooled slightly before mixing with eggs to avoid scrambling.
  • Allow blondies to cool completely before slicing to ensure clean cuts and better texture.
  • Store leftovers in an airtight container at room temperature for up to 3 days.