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Mary Berry Walnut and Chocolate Brownies

Mary Berry Walnut and Chocolate Brownies are traditional British-style brownies made with melted dark chocolate, butter, sugar, eggs, and flour, finished with chopped walnuts folded through the batter. Unlike cake-like brownies, these are designed to be moist and fudgy, with the nuts providing texture and a subtle bitterness that complements the sweetness of the chocolate.

Ingredients

  • 200g dark chocolate (70% cocoa preferred), broken into pieces

  • 200g butter, cubed

  • 250g caster sugar

  • 3 large eggs

  • 100g plain flour

  • 50g cocoa powder

  • 150g walnuts, roughly chopped

  • 1 teaspoon vanilla extract

  • Pinch of salt

Instructions

  • Prepare the tin – Line the baking tin with parchment and preheat the oven to 180°C (350°F).

  • Melt chocolate and butter – Place both in a heatproof bowl set over simmering water and stir gently until smooth.

  • Add sugar – Remove from heat and stir in the sugar until fully combined.

  • Mix in eggs – Beat in the eggs one at a time, followed by the vanilla extract.

  • Fold in dry ingredients – Sift in the flour, cocoa powder, and salt, folding gently to keep the mixture dense.

  • Add walnuts – Fold in the chopped walnuts evenly through the batter.

  • Transfer to tin – Pour the mixture into the prepared tin and smooth the surface.

  • Bake gently – Bake for 25–30 minutes until the top is set but the centre still feels slightly soft.

  • Cool completely – Allow to cool in the tin before lifting out and slicing.