to make meatballs: in a large bowl, combine beef, onion flakes, bread crumbs, salt, nutmeg, eggs and milk. preheat oven to 400 degrees f (200 degrees c). shape mixture into 1 inch balls, and place into a 9x13 inch baking dish; bake in preheated oven for 10 minutes. lower heat in oven to 350 degrees f (175 degrees c).