Mix the Chex cereal and marshmallows in a large bowl. Place cocoa mix, cocoa powder, cinnamon and powdereed sugar in a brown paper bag (whisk together in that bag just a little).
In a microwave safe bowl, combine the butter and chocolate chips. Microwave on high for 1 minute. Stir and continuing microwaving in 15 second intervals, stirring between each until ingredients are completely melted and smooth.
Pour the melted mixture over Chex and marshmallows, combine until cereal and mallows are coated well.
Dump the mixture in your brown paper bag of powdered ingredients. Fold the top over a couple of times and shake, shake, shake until the ingredients are well coated. Dump out onto a baking sheet to cool and set. Enjoy!
Recipe by pretty plain janes at https://prettyplainjanes.com/2015/12/02/hot_cocoa_puppy_chow/