1) Mix Beef, Onion, salt, pepper, cinnamon and egg together. Set aside. 2) Peel hard boiled eggs and cut in half crosswise. Take 2 heaping tablespoons of Beef mixture and cover the egg half. Form a meatball with the egg in the center. 3) Heat oil in skillet and fry meatballs for 4 minutes. Drain and serve with lemon wedges. 4) Can be served over rice or couscous.