1Line cookie sheet with waxed paper. In large microwavable bowl, mix cereal and hazelnuts.
2In 2-cup microwavable measuring cup, microwave peanut butter, brown sugar and butter uncovered on High 1 minute; stir. Microwave 30 seconds to 1 minute longer or until mixture is boiling; stir. Pour over cereal mixture, stirring until evenly coated.
3Microwave uncovered on High 3 minutes, stirring and scraping bowl every minute. Spread on cookie sheet; refrigerate 5 minutes to cool. Stir in peanut butter candies. Store in airtight container.