1. Heat oven to 200 f.
2. Remove any unpopped kernels.
Place popcorn in very large bowl, or divide between 2 ungreasd 13x9 pans.
3. In 2 quart saucepan, heat brown sugar, butter, corn syrup and salt over medium heat, stirring occasionally, until bubbly around edges. Continue cooking 5 min. without stirring; remove from heat. Stir in baking soda until foamy.
4. Pour sugar mixture over popcorn; toss until evenly coated. If using bowl, transfer mixture to 2 ungreased 13x9 pans.
5. Bake 1 hour, stirring every 15 min. Spread on foil. Cool completely about 30 min. Store tightly covered.
Not a NESTLÉ®-tested recipe.