Pour 5 cups of Lucky Charm cereal into a large bowl
Melt 1/2 cup unsalted butter in a saucepan over medium heat.
Add the marshmallows and stir until completely melted and smooth.
Pour the marshmallow mixture over the Lucky Charm cereal and stir until the cereal is evenly coated.
Spread the coated cereal onto a parchment-lined surface. Top with another sheet of parchment paper and press to your desired thickness. Remove the top parchment.
While the cereal is setting, melt the chocolate chips in the microwave.
Place chocolate in a microwave-safe bowl and heat for 30 seconds. Stir thoroughly. Heat for another 30 seconds and stir until completely melted.
Once the cereal treat is set, cut into rectangle bars.
Dip each bar into the melted white chocolate and place them chocolate side down on a parchment paper.
Let bars set at room temperature or freeze for 5-10 minutes until firm. Enjoy!