Melt almond bark in the microwave in a small bowl. Melt in 30-second increments, stirring between.
After melted, stir in sugar.
Pour the cereal into a large bowl and then pour the almond bark mixture over top. With a spatula, stir well, making sure every piece is coated.
Pour the cereal into a large plastic sealable bag and then sprinkle the confectioners sugar and cinnamon over the top. Close bag and shake until well coated.