Pour 8 oz of melted white chocolate over popped corn and stir to coat.
Spread on parchment paper covered baking sheet
Sprinkle with graham cracker crumbs immediately
Add lime zest, extract and green food coloring to remaining chocolate and drizzle over top of popcorn
Notes
If you want to pop your own popcorn instead of using microwave popcorn, you will need 1/2 cup of popcorn for per microwave bag. So a total of 1 cup of unpopped popcorn will yield the same amount of popcorn as two bags of microwave popcorn.
Substitute lemons or oranges for a fun flavor variation of this key lime popcorn.