Plain unpopped popcorn
Lunch size brown paper bag
Non-stick cooking spray, regular or butter flavored
Seasonings, such as Parmesan cheese, herbs, garlic powder, etc.
Cover the bottom of the brown paper bag with a single layer of popcorn. Fold over top.
Place in center of microwave. Turn on high power for 4-5 minutes. Listen for popping to slow considerably.
Remove to a bowl, spray with non-stick cooking spray and sprinkle with salt or other seasonings.