How to Make It
Preheat oven to 350°F. Toss together popcorn, butter, rosemary, salt, and pepper in a large bowl.
Spread in an even layer on a baking sheet lined with parchment paper. Sprinkle cheese evenly over popcorn.
Bake until golden brown in spots, 5 to 7 minutes. Let stand until crisp, about 15 minutes. Break into pieces.