Line a baking sheet or 9x13 inch baking dish with parchment paper and set aside.
In a large mixing bowl, combine the cereal, pretzels, pumpkin candies, M&Ms candies, caramel bits, and honey roasted peanuts.
Spread the mixture onto your prepared baking sheet or dish in an even layer.
In a separate, microwaveable bowl or glass measuring cup, melt the white chocolate chips in intervals of 10-20 seconds, stirring between intervals, until completely melted.
Drizzle the white chocolate over the snack mixture.
Sprinkle the nonpareils over the white chocolate.
Use a spoon to toss the mixture together, making sure that the melted white chocolate coats as much of the ingredients as possible on all sides.
Gently spread the mixture back into an even layer and allow to sit for an hour, or until the white chocolate coating is set and hardened.
Spoon the mixture into a serving bowl or into individual serving containers, then serve.