In a small mixing bowl, combine the crumbled blue cheese, powdered buttermilk, dried parsley, garlic powder, onion powder, dried dill, salt, and black pepper. Mix well until all the ingredients are evenly distributed.
Transfer the mixture to an airtight container, such as a small jar, and store it in the refrigerator until ready to use.
Sprinkle the blue cheese seasoning over freshly popped popcorn for a gourmet twist, or use it as a dip for chips or raw veggies.