Fudgy Brownies

Heat the oven to 175 C and line a 20 cm square pan with baking paper. Melt butter and dark chocolate together in a heatproof bowl in the microwave in 30-second bursts, stirring between, until smooth.

Whisk sugar and brown sugar into melted chocolate, then whisk in eggs and vanilla extract hard for 1 minute until thick and shiny; this gives the crackly top.

Sift all purpose flour, cocoa powder and salt over chocolate base and fold in until just combined. Fold in chocolate chips.

Spread brownie batter in the pan and bake until the top is set and a toothpick 2 cm from the centre comes out with moist crumbs (not wet batter).

Cool baked brownies completely in the pan, at least 1 hour, then lift out and cut into 16 squares.