Preparation

• Preheat the oven to 170ºC/gas mark 3, and line 2 baking sheets with baking parchment.
• Cream together the butter and both sugars until pale then add the egg and vanilla extract and mix together well.
• Sift in the flour, salt and bicarbonate of soda and add to the butter sugar mixture and mix thoroughly until a dough forms, then stir in the chocolate chips.
• Break off pieces of the dough about one tablespoon in size and roll into balls.
• Place these on the baking sheet leaving about 5cm space in between each to allow for them spreading out during baking.
• Place in the oven and bake for 15-20 minutes or until the cookies are light golden brown.