Melt almond bark in the microwave in a small bowl. Melt in 30-second increments, stirring between.
After melted, stir banana pudding mix.
Pour the cereal into a large bowl and then pour the almond bark/banana pudding 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 powdered sugar over top. Close bag and shake until well coated.