In a large bowl, combine the rice Chex, corn Chex, pretzels, Cheerios, peanuts and M&M’s. Set aside.
2½ cups rice Chex, 2½ cups corn Chex, 2½ cups pretzels, 2½ cups Cheerios, 2 cups peanuts, 1 cup red and green M&M's
Place the white chocolate chips into a microwave-safe bowl. Heat in 30-second intervals, stirring after each time, until completely melted. This should take about 1½-2 minutes.
5 cups white chocolate chips
Pour the melted white chocolate into the Chex mixture.
Toss until completely coated.
Spread the mixture onto 1 or 2 parchment lined baking sheets.
Sprinkle with red and green sprinkles. Let set until hardened, about 20 minutes.
1 tablespoon red sprinkles, 1 tablespoon green sprinkles
Once set, break up into small chunks and serve.