Ingredients
140 g dark chocolate, cut into pieces.
130 g butter, unsalted, cut into pieces.
100 g sugar.
100 g brown sugar.
1 egg.
2 tsp vanilla sugar, homemade or 1 tsp natural vanilla extract.
180 g flour.
1/2 tsp baking soda.
1/2 tsp baking powder.
1 pinch salt.
Useful items 2 baking trays.
Banking paper.
Cooling rack.
Air-tight container.
