140 g dark chocolate, cut into
pieces (1-2 cm)
• 130 g butter, cut into pieces
• 100 g caster sugar
• 100 g light brown sugar
• 1 egg
• 2 tsp vanilla sugar or 1 tsp
natural vanilla extract
• 180 g plain flour
• ½ tsp bicarbonate of soda
• ½ tsp baking powder
• 1 pinch salt