1Make cookie dough as directed on package. Stir in peanut butter pieces. Drop by rounded teaspoonfuls 2 inches apart on ungreased cookie sheets; flatten slightly.
2Bake at 375°F for 10 to 13 minutes. Immediately top each cookie with 1 peanut butter cup; press lightly into dough. Cool 2 minutes; place cookies on cooling racks. Cool completely.