Start by getting the ingredients ready like putting the cereal in a large mixing bowl. Also, mix together the cinnamon and granulated sugar in a separate small bowl. Get out a large gallon-sized Ziploc bag for mixing the coated cereal into the powdered sugar.
In a microwave-safe bowl, heat the white chocolate chips for about 45 seconds. Stir with a rubber spatula to mix the melted sections with the parts that may still be chunky. Heat another 15 seconds at a time, stirring in between, until it is all melted and smooth. Be careful to NOT overheat white chocolate. It is more temperamental than other chocolates and will “seize” up easily.
Working fast, stir the white chocolate into the cereal. Mix carefully to not break up the cereal pieces too much. As stirring sprinkle in the cinnamon & granulate sugar mixture. Stir, sprinkle, stir, sprinkle more, etc. Once all is stirred together and the cereal is coated evenly it is ready for the final step.
Add half the powdered sugar into the Ziploc bag. Then add the cereal mixture and top with the other half of the powdered sugar. Seal the Ziploc and now toss and shake gently to evenly coat everything. Add additional cinnamon, if desired.
To Store - To keep them as fresh as possible, store in the Ziploc bag or in an air-tight container like a jar or sealable container.