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.
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
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.