Meatballs: Mix the ground meat with egg, diced bread, garlic, cheese, parsley and onion. Season with salt and pepper. Mix thoroughly. Roll into small balls. Set aside for soup
Soup: Bring broth to a boil in large pot over medium-high heat. Add meatballs and greens. Simmer until meatballs are cooked through and greens are tender, about 10 minutes. Whisk eggs and cheese in medium bowl. While stirring soup in circular motion, add in egg mixture slowly. Stir gently for 1 minute. Season soup with salt and pepper.