Preheat oven to 350*. Liberally grease/spray a loaf pan and set aside. In a large bowl, combine all ingredients, except the extra 1/2C of ketchup. Mix only until all ingredients are incorporated. Do not overmix, or the meatloaf will be dense and tough. Press into the loaf pan and spread the extra 1/2C of ketchup over top. Bake 50-60 minutes. Remove from oven when done, and let rest for 10 minutes before slicing.