Ingredients
Method
- Heat oven to 250F. Line two large rimmed baking sheets with parchment. Place popcorn in a very large bowl.
- Melt butter in a heavy 3-quart saucepan. Stir in brown sugar, corn syrup and salt.
- Bring to a boil, then boil without stirring for 4 minutes.
- Remove from heat and stir in vanilla, then baking soda; it will foam.
- Pour over popcorn and fold to coat. Divide between pans.
- Bake 45 to 60 minutes, stirring every 15 minutes.
- Sprinkle with flaky salt. Cool completely, then break into clusters.
Notes
Hot sugar causes serious burns; use a long spoon and keep children away. Store airtight at room temperature up to 1 week.
