Many ways, but none quite as easy as this one. Oil and melted butter. These are good. So good, they are wild. Naturally White Unbleached All Purpose.
Nothing is better for cookie making than unbleached flour.
Preheat oven to 350 F. Line two large cookie or baking sheets with parchment paper. Spray paper lightly with cooking spray. In a mixing bowl, blend the oil, butter, brown and golden sugar. Beat in eggs and vanilla. Fold in flour, salt, baking soda, then chocolate pieces.