1 lb. real butter
1 lb. light brown sugar (2 1/4 to 2 1/2 cups)
1 c. light Karo syrup
1 tsp. vanilla
1 tsp. salt

Mix ingredients thoroughly and pour into large saucepan. (Mix will swell.) Bring to a boil and allow to do so for 5 minutes. Pop 2 o 3 batches of popcorn. Use turkey roaster bottom and add popped corn. Place roaster pan in 250 degree oven for 45 minutes. Use spatula to turn every 10 minutes keeping the caramel from settling to the bottom and stirred. Remove from pan and place on a cookie sheet or waxed paper. Break apart before totally cooled.