Line a large rimmed baking sheet with parchment paper and set aside.
Add cereal and pretzels to a large bowl.
6 cups Rice Chex cereal, 4 cups holiday-shaped pretzels
Melt the melting wafers in a medium bowl at 30-second intervals until, stirring between each one, until smooth.
16 ounces white chocolate melting wafers
Add in the toffee bits, 1 cup M&MS, and ¾ cup marshmallows. Stir until evenly coated.
1 cup Heath toffee bits, 1½ cup holiday M&Ms, 1 cup mini dehydrated marshmallows
Spread the mixture out on the prepared baking sheet and top with the remaining marshmallows and M&Ms as well as sprinkles. Let set for 20 to 30 mintues before enjoying.
1½ cup holiday M&Ms, Holiday sprinkles, 1 cup mini dehydrated marshmallows