In medium bowl, break up cookie dough. Add peanut butter; mix with wooden spoon or knead with hands until well blended. Shape dough into 16 (1 1/2-inch) balls. Place 2 inches apart on ungreased cookie sheet; flatten to 2 1/4 inch round with bottom of drinking glass. Bake 8 to 11 minutes or until golden brown. Cool 2 minutes; remove from cookie sheet to cooling rack. Cool completely, about 20 minutes.