01 - Line a large baking sheet with parchment paper or a silicone baking mat.
02 - In a large mixing bowl, combine Rice Chex, mini pretzels, and popcorn.
03 - Pour the melted white chocolate over the mixture and gently toss until everything is evenly coated.
04 - Add mini marshmallows, green chocolate candies, and white chocolate chips. Toss gently to distribute.
05 - Spread the mixture in an even layer on the prepared baking sheet.
06 - Immediately sprinkle the rainbow sprinkles over the top before the chocolate sets.
07 - Allow the mix to sit at room temperature for 20-30 minutes until the chocolate hardens.
08 - Break into clusters and serve, or store in an airtight container for up to 5 days.