01 -
In a big mixing bowl, toss the pretzels, Cheerios, Chex cereal, and M&M's together.
02 -
Heat the white chocolate in a microwave-safe bowl. Do it in short 30-second bursts, stirring well each time, until melted. Be careful not to overdo it.
03 -
Pour the melted chocolate over your dry mix. Stir until every piece is evenly coated.
04 -
Spread everything out on parchment or wax paper. Let it sit and firm up for 15 minutes, or longer if needed.