6 qt. popped popcorn (about 1 1/2 cups unpopped)
2 cups brown sugar
1 cups butter
1/2 cup corn syrup
1 tsp. salt
1 tsp. baking soda
1/2 tsp. vanilla
Divide popcorn in half and spread over 2 cookie sheets (I use parchment paper so it doesn't stick to the pan). Combine brown sugar, butter, corn syrup, and salt. Bring to a boil and then boil for 5 minutes. Remove from heat and stir in soda and vanilla. Pour over popcorn and stir until evenly coated. Bake at 250 for about an hour stirring every 15 minutes.
