1. Prick the eggplant skins with a fork. Put them on a broiling pan and broil or grill for 15 minutes. Chop the parsley. Peel the garlic and chop it.
2. Put the bread crumbs, crumbled feta and chopped garlic into a bowl. Using your hands, toss until everything is finely crumbled.
3. When the eggplants are cooked, cut each in half. Break the flesh into pieces using the tip of a knife.
4. If desired, add salt and pepper to the eggplant. Sprinkle each eggplant half liberally with several dashes of olive oil, moving the bottle so as to distribute the oil evenly.
5. Place the eggplant halves on a flat baking dish. Sprinkle with chopped parsley and fill them with the feta mixture.
6. Bake the eggplant haves in the oven at 200°C/390°F for 10 minutes. When they are browned, remove from the oven and pour the vinegar and 3 tsp olive oil over the top.
Serve hot.