My mother makes this every year during the holidays and it's highly addicting. I had her write the recipe down and I'm putting on here verbatim. If you have any questions let me know!
Total Time: 1 hour Active Time: 20 mins. Number Serves: 1-20 depending on who gets it first! Equipment: Roasting Pan (like you'd do a turkey in or foil equivalent.)
1 cup margarine
2 cups brown sugar
1/2 cup white karo syrup
1 tsp. salt
1/2 tsp. baking soda
1 tsp. vanilla
6 qts. popped popcorn (the real stuff, old school, NOT microwave)
Preheat oven to 250 degrees
Pop popcorn and measure 26 cups into the roaster pan (make sure there's no seeds!)
In a pot,Melt butter, stir in brown sugar, karo syrup and salt. Bring to a boil, stirring constantly.
Reduce heat and let simmer for 5 mins. without stirring.
Remove from heat, add soda and vanilla, stir in well.
Pour over popped corn and mix well.
Put in 250 degree oven for 1 hour, stirring with a wooden spoon once every 15 mins.
After 1 hr., remove and turn out popcorn on wax paper and spread out. Let cool, store in airtight containers.