1. Pour the Chex cereal into a large bowl. Set aside.
2. In a medium microwavable bowl, melt the chocolate chips. Heat for 1 minute then stir. Heat for an additional 30 seconds and stir again. Continue with additional 30 seconds until completely melted and chocolate is smooth. Pour the chocolate over the Chex cereal. Gently stir until cereal is well coated. Stir in the crushed candy canes until the cereal is evenly coated.
3. Pour the cereal onto a large baking sheet. Sprinkle cereal with powdered sugar until well coated. Let the Chex Mix sit until chocolate is dry, about 15 minutes. Add the chopped peppermint bark and serve!
Note-you can store the Peppermint Bark Chocolate Chex Mix in an air tight container for 3-4 days. It never lasts long in our house:)