Baked Caramel Corn
["1 c. margarine (2 sticks)", "2 c. brown sugar", "1/4 c. corn syrup", "1 tsp. salt", "1/2 tsp. baking soda", "1 tsp. vanilla", "6 qts. popped corn"]
["Melt margarine. Add remaining ingredients. Bring to boil, stirring constantly. Reduce heat. Boil 5 minutes without stirring. Remove from heat and add baking soda and vanilla.", "Pour over popped corn. Put mixture in two shallow pans. Bake at 200\u00b0 for 1 hour, stirring every 15 minutes."]
["margarine", "brown sugar", "corn syrup", "salt", "baking soda", "vanilla", "corn"]