TOSS cereal with popcorn, pretzels and peanuts in large microwavable bowl.
MIX butter, Worcestershire sauce and seasoned salt until well blended. Drizzle evenly over cereal mixture; toss to coat.
MICROWAVE on HIGH 2 to 3 min. or until cereal is crisp, stirring after 2 min.
Variation - Sweet and Crunchy Mix
Omit Worcestershire sauce and seasoned salt. Prepare as directed, adding 1/2 cup dried cranberries and 1/2 tsp. ground cinnamon.