Dried parsley flakes are subtle and muted in flavor. In contrast to many other herbs whose flavors are concentrated when dried, parsley loses much of the brightness it has when it is fresh. When cooking it's best to think of them as completely different herbs and not as interchangeable ingredients in recipes.
Dried parsley has the advantage of holding up to long periods of cooking and at high heats. It can be added throughout the cooking process to allow its flavors diffuse into the dish. Dried parsley is good at supporting other herbs in recipes and is often a complement to garlic, oregano, and chile peppers.
You can use dried parsley in herb mixes for meatballs or braised meat dishes, oven-baked vegetables, soups and stews, or vinaigrettes.