Spritz the cooking spray over the popcorn and mix well. Toss through the protein powder, salt, cinnamon, and sweetener until the popcorn is well coated.
Transfer the popcorn into serving bowls and enjoy immediately.
Notes
Serving size is 3 cups of popcorn.* Or air fried popcorn or microwave plain popcorn. ** White sugar or brown sugar works.TO STORE: Leftover popcorn (flavored or unflavored) can be kept at room temperature for up to five days. TO FREEZE: Do not freeze the popcorn, as it will become soggy and rancid.