Preheat the over to 180C , gas mark 4
Cream the butter and sugars, then mix in the egg and vanilla
Sift in the flour and salt, then add the chocolate chips
Scoop tablespoon sized amounts on to a baking tray
Place on an ungreased baking tray and bake for 7 minuites unill just setting for a true doughy cookie, or cook for 10 minutes or until just golden around the edges.