Gooey Carmel Corn

1 cube of butter (or margarine)
1/2 cup brown sugar
1 cup mini marshmallows
1 bag popped microwave popcorn (plain)

In saucepan melt sugar and add brown sugar and marshmallows. Stir continuously until marshmallows are melted. Pour over popcorn and stir until mixed completely...so YUMMY!