In a double boiler, melt chocolate almond bark and stir continuously until smooth
Add in peanut butter and stir until well combined
In a large bowl, combine cereal, marshmallows and Reese's Pieces
Pour melted chocolate and peanut butter over cereal mixture and stir until well combined
Spray a brownie pan or 8X8 baking dish thoroughly with nonstick cooking spray
Pour mixture into pan and press into all corners using your hand or a well greased spoon to make sure mixture spreads as evenly as possible
While mixture is still wet, add a few more candy pieces and cereal for garnish if desired
Allow to sit on counter until mixture firms up enough to cut - at least 2 hours
Cut into squares and enjoy!