01 -
Set your oven to 160ºC (320ºF) with a fan or 170ºC (338ºF) for conventional heating. Prepare a baking tray by lining it with parchment paper.
02 -
In a heatproof bowl, combine the chopped dark chocolate and butter. Place this bowl over a pan of simmering water, ensuring the bowl does not touch the water. Stir occasionally until fully melted and combined. Stir in the vanilla extract.
03 -
In a separate medium bowl, use an electric hand whisk on high speed to beat the caster sugar, demerara sugar, and eggs. Whisk until the mixture becomes very light, thick, and fluffy.
04 -
In another bowl, sift the flour, cocoa powder, baking powder, chocolate chips, and salt. Mix well to eliminate lumps and ensure even distribution.
05 -
Gradually fold the melted chocolate and butter mixture into the whipped eggs and sugars. Stir gently to keep the airiness of the whipped mixture.
06 -
Carefully fold the dry ingredients into the wet mixture using a spatula. Stir only until just combined to preserve the batter's light texture.
07 -
Scoop tablespoons of batter onto the prepared baking tray, spacing them well apart. Bake in the preheated oven for 12-14 minutes until set and crackly on top.
08 -
Remove from the oven and sprinkle with sea salt if desired. Let the brookies cool on the baking tray for about 10 minutes before transferring to a cooling rack.