Wash and cut up potatoes, but DO NOT PEEL. Put oil, parsley flakes and seasonings in a plastic bag. Add potatoes to bag and shake until they are thoroughly coated with oil. Place in a large Pyrex baking dish. If you are cooking a roast, bake potato dish along side for at least 1 hour.
To cook potatoes alone, preheat oven to 400 degrees. Cover potatoes loosely with plastic wrap, and cook first in microwave on HIGH for 8 minutes. Finish cooking (roasting) in preheated oven, uncovered, for about 1/2 hour or until lightly browned. If not browned after 1/2 hour, turn oven up to 450 degrees, watch closely. Put in serving dish.
Serves 4.