In a microwave-safe 1-1/2-quart casserole combine chocolate pieces and peanut butter cups. Micro-cook on 100 percent power (high) for 1-1/2 to 2-1/2 minutes, stirring after 1 minute. Stir until nearly smooth.
Stir in noodles and peanuts until coated.
Drop by rounded tablespoonfuls onto a baking sheet lined with parchment or waxed paper. Quick-chill in the freezer about 8 minutes or until firm. Store, covered, in the refrigerator up to 1 week. Makes 20 cookies.