Marshmallow Caramel Popcorn.

1/2 c. brown sugar 
1/2 c. butter
 9-10 marshmallows 
12 c. popcorn. 
Microwave brown sugar and butter for 2 minutes. 
Add marshmallows. 
Microwave until melted, 1 1/2 to 2 minutes. 
Pour over popcorn.