Microwave the almond bark in a microwave-safe bowl until melted, 1 to 2 minutes. Place the puffcorn in a large mixing bowl or giant resealable bag (like a sweater storage bag). Pour the melted almond bark over the puffcorn and mix or shake to completely coat.
Spread the mixture out onto parchment paper or in a single layer in the resealable bag to set, about 10 minutes. Store in an airtight container. If left uncovered for too long, the puffcorn will get soggy. Lasts about 5 minutes!