Place popcorn in a large bowl. In a small bowl, stir together melted butter, brown sugar, and cinnamon until completely combined. Drizzle over popcorn and quickly toss to coat popcorn evenly. Serve immediately.
NOTES
- If using microwave popcorn, look for plain varieties.
Recipe by Love Grows Wild at https://lovegrowswild.com/2015/04/cinnamon-brown-sugar-popcorn/