Melt the chocolate in the microwave with the peanut butter and butter. It will take about a minute or two depending on your microwave. Add the vanilla and cinnamon.
Pour over the chex. Mix carefully and try not to break the cereral up. Add the confectionery sugar to a plastic bag. Add the cereal mix and shake until coated..
Recipe by Recipes Food and Cooking at https://recipesfoodandcooking.com/2014/09/26/snickerdoodle-muddy-buddies/