In a large bowl cream together the butter with brown sugar and the white sugar

Add the egg and vanilla extract and mix until combined

Sift the self-raising flour and the baking soda together into the mixture then mix the flour until there is no trace of flour

Fold in the chocolate chips into the dough

Take a tablespoon of the cookie dough mixture and make a smooth ball

Place the dough balls on to a baking tray ensuring to leave enough space between each ball to allow the cookies to spread then leave in the refrigerator for at least 30 minutes

Bake in the centre of a preheated oven at 180°C/350°F (gas mark 4) for 12-15 minutes

Let the cookies cool down before serving them warm or cooled with a glass of milk and enjoy!