Combine cereal and peanuts in a large paper grocery bag.
In a small saucepan, heat white chocolate and peanut butter over low heat until melted. *Be careful not to overheat!
Pour melted white chocolate mixture over cereal; fold bag and shake until evenly coated.
Let stand a few minutes to cool.
Sprinkle with 2 c. powdered sugar and shake to coat.
Add candy corn and remaining powdered sugar and shake until evenly coated.
Spread on baking sheet to cool.