Caramel Corn
["7 c. popcorn, popped (1/2 c. unpopped)", "3/4 c. packed brown sugar", "1/3 c. margarine", "3 Tbsp. light corn syrup", "1/4 tsp. baking soda", "1/4 tsp. vanilla", "1 c. peanuts (if desired)"]
["Place popcorn in greased 17 x 12 x 2-inch baking pan.", "Keep warm in 300\u00b0 oven. Butter sides of 1 1/2-quart pan.", "Combine sugar, margarine and corn syrup.", "Cook until boiling.", "Stir with wooden spoon to dissolve sugar 7 to 10 minutes.", "Cook until hard ball stage, 4 minutes.", "Add baking soda and vanilla.", "Stir until combined.", "Pour caramel mixture over popcorn.", "Stir gently to coat.", "Bake in 300\u00b0 oven for 10 minutes.", "Stir.", "Bake for 5 minutes more.", "Remove from heat before adding baking soda. Turn popcorn mix onto large piece of foil.", "Cool completely.", "Break into small pieces.", "Add nuts."]
["brown sugar", "margarine", "light corn syrup", "baking soda", "vanilla", "peanuts"]