Line baking sheets or trays with waxed paper. Micorwave morsels in large, microwave-safe bowl on MEDIUM-HIGH (70%) power for 1 minute; stir. Microwave at additional 10- to 20-second intervals, stirring until smooth. Stir in peanut butter until well-blended. Add chow mein noodles and marshmallows; toss until coated. Drop by rounded tablespoon onto prepared baking sheets. Refrigerate until ready to serve. |