Double Chocolate Peanut Butter Stuffed Cookies Double Chocolate Peanut Butter Stuffed Cookies Ingredients 1 cup cold butter cubed 1 cup light brown sugar ½ cup granulated sugar 2/3 cup dark chocolate chips 2/3 cup peanut butter chips ½ cup black baking cocoa 2½ cup flour 1 teaspoon cornstarch ¾ teaspoon baking soda ½ teaspoon kosher