Brown Bag Popcorn

1 ½ cups unpopped popcorn
1 lb brown sugar
1 cube butter
1 cup Karo syrup
1 can sweet and condensed milk
1 tsp vanilla

Pop popcorn. Bring brown sugar, butter, and Karo to a boil. Add sweet and condensed milk. Bring to soft ball stage and add vanilla. Pour over popcorn in brown bag and mix well.