Having kids that are chocoholics, this recipe is great and easy. I sprinkle powdered sugar on mine when they are completely cooled. I also use an ice cream scoop to drop on cookie sheet. That way they are all uniform in size. I have a size #20 scoop and a one tablespoon (35 mm). The smaller one makes more cookies as they spread when baking.
If you place the cookies in the oven when the dough is chilled first, they will not spread as much and will be higher in the middle. More cake-like. At room temperature, they spread more and are flatter and more crispy.