Line two large cookie sheets with parchment paper. Set aside.

Add cinnamon Chex cereal to a big bowl, and mix together cinnamon, hot cocoa mix and powdered sugar in a small bowl. Set aside.

In a microwave safe dish, melt the semi-sweet chocolate chips in 30 second intervals, stirring in between each until chocolate is melted and smooth. Pour it over the cereal and stir to coat it.  Pour the cereal into a 2 gallon ziplock bag and dump the powdered sugar mixture in. Zip it closed and give it a good shake to coat the cereal in the powdered mixture.

Spread it out on a cookie sheet covered in parchment paper.

In a small microwave safe bowl, melst white chips for 30 seconds, then in 15 second increments, stirring in between, until melted and smooth. elt the white chocolate chips and stir in the marshmallows into the melted white chocolate.  Coat the marshmallows in chocolate.

Spread the marshmallows onto another cookie sheet covered in parchment paper, and in about 30 minutes the chocolate will be set.  Then you can stir them into the cereal mixture. 

Finish with sprinkles if desired.

Store in an airtight container.