In a large microwave safe bowl, melt down the white chocolate almond bark in the microwave in 30 second increments - stirring each time - until fully melted and a smooth consistency.
In the meantime, spread out parchment paper on a flat surface or baking sheet (if using).
Once the almond bark is completely melted, add the Chester's butter puffcorn to the large mixing bowl with the chocolate and toss until all puffcorn is lightly coated.
Pour mixture onto parchment paper/baking sheet and spread out into a single layer.
Sprinkle your Christmas sprinkles of choice (pun intended) over the top of the mixture so that they stick to the white chocolate coating.
Set aside until completely cooled or, if using a baking sheet, feel free to pop it into the fridge or freezer for quicker cooling. Once the white chocolate has fully cooled and hardened, dig in!