Parchment paper is placed on the baking sheet.  Softened butter is placed in a mixing bowl.  The mixer then begins to cream the butter.  Sugar is added to the mixing bowl to be beaten in.  Flour is measured, and combined with cornstarch which is measured then mixed into the bowl.  Dough is measured out by spoonful, rolled up and placed on baking sheet.  The dough is flattened and baked into cookies.  The cookies are then placed on a baking sheet, then rack to cool with a spatula.  The cookies are cooled to be enjoyed.