Gather all your ingredients: Rice Chex cereal, white chocolate, lemon zest, powdered sugar, and lemonade mix. Set up your tools: microwave-safe bowl, large resealable bag, and parchment paper.

In a microwave-safe bowl, add the white chocolate and melt it in 30-second intervals, stirring until smooth, about 1-2 minutes.

Once melted, stir in the lemonade mix and lemon zest until completely combined, about 1 minute.

Pour the lemony chocolate mixture over the Rice Chex in a large bowl and fold until evenly coated, taking about 2-3 minutes.

Transfer the coated Rice Chex to a large resealable bag, add powdered sugar, and shake gently until coated, about 1-2 minutes.

Spread the coated cereal onto parchment paper and let it set for about 10 minutes before serving.