unsalted is our preference
Use 3/4 cup unpopped kernels to make 3 quarts of popped corn. Air popped does not work so well with this recipe.
Butter a large cookie sheet.
Preheat oven to 300 degrees.
Melt butter, sugar, cinnamon and salt in small saucepan over medium heat heat.
Cook until sugar dissolves and mixture is bubbly.
Carefully pour over popcorn and bake for 15 minutes, stirring once during baking and again during cooling.
Replace cinnamon with your favorite cinnamon based spice mix