Caramel marshmallow popcorn

Caramel marshmallow popcorn 13- 15 cups popcorn, lightly salted 1 cup butter 16 oz bag mini marshmallows 3/4 cup brown sugar 1/2 cup mini m&m's -optional Melt butter and marshmallows in a large pan over medium/low heat. Once the butter is melted, stir in brown sugar until it is dissolved (only about 1 minutes). Remove from heat and add popcorn. Stir until completely coated. Spread popcorn out onto wax paper and sprinkle with m&m's if desired.