1Fill large roasting pan with popped corn. (I use the top and bottom of a large roaster)
2In a large pan(I use a soup kettle) put the brown sugar,margarine,& corn syrup mix up and bring to a full boil,stirring constantly.
Boil 5 minutes(still stirring)
Remove from heat and add vanilla and soda(it will raise up)Blend well and pour evenly over pans of popped corn.
3Place in a preheated oven at 250 for 45 minutes.
STIR EVERY 15 MINUTES.
Spread on waxed paper an allow to cool.
At this point try not to eat to much!!