Great party food because it's so fast and cheap to make, and so addictive but your guests won't get too full! The key tip with this is to prepare it all in advance then assemble just before serving, otherwise the oil spray and moisture in the parmesan gets absorbed into the popcorn so it loses its crunchiness.
1. You need to use freshly grated parmesan cheese in this. The store bought fine shreds or granules don't stick to the popcorn as well because they are not as finely grated.
2. The popcorn needs to be seasoned just before serving otherwise the oil and moisture in the parmesan cheese gets absorbed by the popcorn so it isn't as crunchy. The first time I made it, I assembled it 1 hour before serving and it was less crunchy than I preferred. It was still tasty though!
3. Nutrition assuming 6 servings (1 1/2 cups each)