01 - Place the rice cereal squares in a large mixing bowl, ensuring you have enough space to coat them evenly with the chocolate mixture.
02 - Combine white chocolate chips, peanut butter, and butter in a microwave-safe bowl. Microwave in 30-second intervals, stirring thoroughly between each, until completely smooth and melted, approximately 1–2 minutes total.
03 - Stir the vanilla extract into the melted chocolate mixture until fully incorporated.
04 - Pour the warm chocolate mixture over the cereal. Using a spatula, gently fold and toss the cereal until every piece is evenly coated with the chocolate mixture.
05 - Transfer the chocolate-coated cereal to a large gallon-size zip-top bag. Add the powdered sugar, seal tightly, and shake vigorously until all cereal pieces are thoroughly covered in white powder.
06 - Spread the coated cereal onto a parchment-lined baking sheet in an even layer. Allow to cool for 10 minutes until the chocolate sets.
07 - Once cooled, add the green candy-coated chocolates, mini marshmallows, chopped gold coins, and green sprinkles. Gently toss to distribute all add-ins evenly throughout the mix.
08 - Transfer the completed Lucky Chow to an airtight container. Store at room temperature until ready to serve, ideally within 3 days for optimal freshness.