Lightly spray very large ovenproof bowl, preferably
glass or ceramic, and baking sheet with nonstick cooking spray. Add popcorn to bowl.
Place in oven to warm while preparing the glaze.
Place sesame seeds in a small bowl. Stir together maple syrup, brown sugar, and
cinnamon in small, heavy-bottom saucepan. Bring to boiling over medium heat; cook
to hard ball stage (250 degrees F on candy thermometer).
Stir in butter and cook
to hard crack stage (280 degrees F on candy thermometer).
Remove popcorn from oven.
Pour about half of glaze over popcorn, working quickly and tossing with metal spoon
to coat popcorn.
Sprinkle on sesame seeds; pour on remaining glaze and toss until
evenly coated. (If mixture cools down too quickly, warm in oven until softened enough
Spoon onto prepared baking sheet and spread into small clumps. Cool.