This recipe was contributed by Aubony O.
1 cup butter
2 cups brown sugar
1/2 cup corn syrup
1 teaspoon salt
1/2 teaspoon baking soda
1 teaspoon vanilla extract
5 quarts popped popcorn (about 2 bags microwaved popcorn)
In medium saucepan over medium heat, melt butter. Stir in brown sugar, corn syrup, and salt. Bring to a boil, stirring constantly.
Boil without stirring 4 minutes. Remove from heat and stir in baking soda and vanilla.
Microwave 2 bags of microwave popcorn, pull out kernels that didn't pop, and put in large bowl.
Pour a thin stream of caramel over popcorn, stirring to coat. Let cool for a few minutes and serve.