Also copied from another board19 Feb 2025 17:02
Preheat the oven to 170C/150C Fan/Gas 3Β½ and line a 20cm/8in square brownie tin.
Put the butter and cocoa into a saucepan over a low heat, stirring frequently until the butter has melted. Remove from the heat and leave to cool for 2 minutes.
Meanwhile, whisk the eggs, both sugars, vanilla and salt for about 2 minutes until pale. Add the cocoa and butter mixture and stir to combine.
Sift the flour over the mixture and use a rubber spatula to mix thoroughly. Pour the mixture into the prepared tin, spread level and bake for 18β20 minutes until just firm to the touch. Leave to cool in the tin before cutting into squares.
Recipe tips
The secret to getting the perfect fudgy brownie is to remove them from the oven just before they are fully baked, so that the remaining heat just tips them over into being firm.