Mix the ground beef, egg, onion, garlic, breadcrumbs, nutmeg, salt, pepper, and one tbsp of parsley in a large bowl until well combined. Divide the mixture into 20 meatballs
Heat the oil in a large skillet over medium-high heat and brown the meatballs on all sides. Don’t worry if they are not fully cooked at this time. Transfer them to a plate.
Add the beef broth, cream of chicken soup, sour cream, and remaining tbsp of chopped parsley to the same skillet. Bring to a boil, reduce the heat, and simmer for 2-3 minutes.
Return the meatballs to the skillet and simmer for 5-7 minutes or until fully cooked. Serve over freshly cooked egg noodles.