- 10 large marshmallows
- 1/2 cup butter
- 1/2 cup brown sugar
- 10 cups popped popcorn
- Combine marshmallows, butter, and brown sugar in a microwave-safe bowl; heat in microwave until marshmallows are melted and mixture is smooth, 30 to 60 seconds.
- Place popcorn in a bowl and pour marshmallow mixture over popcorn; stir to coat.