110 g (3.9 oz / 1 stick) unsalted butter, plus extra for greasing
180 g (6.3 oz / 1 cup) soft light brown sugar
1 large egg
225 g (7.9 oz / 1¾ cups) plain flour
30 g (1.1 oz / ¼ cup) cocoa powder
1 tsp bicarbonate of soda
¼ tsp salt
60 g (2.1 oz / ¾ cup) white chocolate chips
60 g (2.1 oz / ¾ cup) milk chocolate chips
Preheat the oven to 190 °C (374 °F). Grease 3 baking trays.
Mix the flour, cocoa, bicarbonate of soda and salt in a bowl.
Beat the butter and sugar in a mixing bowl until soft and fluffy.
Beat in the egg.
Fold the dry ingredients into the wet ingredients.
Fold the chocolate chips into the dough.
Spoon heaped tablespoons of dough onto the baking trays, well spaced apart.
Bake for 12–15 minutes. If you want a chewy texture, reduce the time to 10 minutes.
12–15 minutes
Transfer the cookies to wire racks and leave them to cool.
Enjoy!