Prepare a cookie sheet with parchment paper.
Spread the Chex cereal over the sheet in a single layer.
Melt the white chocolate in a microwave-safe bowl at 15 second intervals, stirring in between.
Pour the melted chocolate over the cereal.
Top with m&ms, peanuts, marshmallow, candy corn and holiday sprinkles.
Stir the mixture with a large spatula so that everything is covered in the chocolate candy coating.
Place the cereal mixture in the fridge to allow the chocolate to set before breaking the sweet treat into pieces.