Caramel Corn

6 quarts popped popcorn

2 cups packed brown sugar

1 cup butter

1/2 cup light corn syrup

1 teaspoon salt

1 Tablespoon vanilla extract

1/2 teaspoon baking soda

Place popcorn in large bowl and set aside. In a saucepan, combine brown sugar, butter, corn syrup, and salt; bring to a boil over medium heat, stirring constantly. Boil for 5 minutes, stirring occasionally. Remove from the heat. Stir in vanilla and baking soda; mix well. Pour over popcorn and stir until well-coated. Pour into two greased 13X9 inch baking pans. Bake, uncovered, at 250 degrees for 45 minutes, stirring every 15 minutes. Cool completely. Store in airtight container or plastic bags.