If you’ve ever carved a pumpkin and tossed the seeds in the trash, you’ve thrown away one of the easiest superfoods around. Pumpkin seeds, also called pepitas, are the small, flat seeds found inside a pumpkin. Once roasted, pumpkin seeds turn into a crunchy, slightly nutty snack that works just as well on a salad as it does straight from the bag. People have been eating pumpkin...