Meanwhile, line large rimmed cookie sheet with waxed paper. In large microwavable bowl, add cereal. In small microwavable bowl, microwave 1/4 cup butter uncovered on High 20 to 40 seconds or until melted. Stir in 2 tablespoons sugar; microwave about 30 seconds or until sugar is dissolved. Pour butter mixture over cereal, mixing to coat. Microwave uncovered on High 3 to 5 minutes, stirring after every minute, until thoroughly glazed. Spread mixture on cookie sheet; cool 15 minutes.