Cinnamon-Sugar Popcorn

Directions

1. 1
   Preheat oven to 250F Prepare popcorn in an air popper according to manufacturer's directions.
2. 2
   Melt butter in a small saucepan over medium heat.
3. 3
   Add sugar, cinnamon, salt and vanilla extract.
4. 4
   Cook until thick and bubbly.
5. 5
   Pour over popcorn and toss to coat.
6. 6
   Pour popcorn into a large roasting pan.
7. 7
   Bake in preheated oven 10 minutes, then turn off oven without opening oven door.
8. 8
   Leave pan in oven an additional 20 minutes.
9. 9
   Cool to room temperature before serving.