The most basic ingredient in meatloaf is ground meat. Diced onions, bread crumbs, milk and eggs are necessary ingredients to make the panade that holds the ground meat together and adds moisture to the mixture. Basic seasoning ingredients include salt, pepper, mustard and ketchup.
Any type of ground meat is suitable to make meatloaf, including beef, veal, lamb or pork. Two pounds of ground meat typically makes six to eight servings. Small and diced onions help add flavor to the meatloaf. A typical meatloaf recipe calls for approximately 3/4 cup of diced onions.
Required ingredients for the panade include 1 cup of seasoned bread crumbs, 1/2 cup of milk and 2 beaten eggs. These ingredients add flavor to the meatloaf and ensure that it is not too dry or crumbly. Ketchup and mustard add flavor to the meatloaf and give it a glaze. A typical recipe calls for 1/2 cup ketchup and 1/2 cup mustard. A sprinkle of salt and pepper add flavor to the meatloaf.
For an interesting twist, combine multiple types of ground meat as the base of the meatloaf. Other ingredients to add include carrots, celery, garlic and bacon. Alternate seasonings for meatloaf include thyme and Worcestershire sauce.