1Combine 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.
2Place popcorn in a bowl and pour marshmallow mixture over popcorn; stir to coat.
Footnotes
Cook's Notes:
I also tried it using white sugar and a little almond and rum flavoring. This gave it more of a glazed english toffee flavor.