In a large mixing bowl, combine all ingredients except one 1/2 cup ketchup. Mix until all ingredients are well incorporated. Grease a 9x13 baking dish, place meat mixture in dish and form into a loaf. Bake in a 350 degree oven for about one hour or until meat is cooked through. Spread remaining half cup of ketchup over meatloaf and bake for an additional 5 minutes . Remove from oven, and let cool slightly. Enjoy!