How to make chocolate chip cookies

Ingredients 85g/3oz butter  85g/3oz granulated sugar  85g/3oz brown sugar  Few drops vanilla essence  1 egg  170g/6oz self raising flour, sifted  Pinch salt  60-120g/2-4oz chocolate chips Method Grease two baking trays.  Cream the butter with the sugar and vanilla essence.  Beat in the egg.  Fold in the flour and salt with the chocolate chips.  Drop spoonfuls of mixture onto the baking trays and bake the cookies at 175°C, Gas Mark 4 for 12-15 minutes.  Stand for 1 minute then place chocolate chip cookies on a wire rack to cool.