Preheat the oven to 350 degrees F (175 degrees C).
Melt the butter in a nonstick skillet over a medium heat.
Add the onion and celery, and cook for 7 minutes or just until tender.
Stir the celery mixture with the beef.
Stir in the breadcrumbs, 1/3 cup ketchup, Greek and Creole seasonings, garlic, eggs, and half the Worcestershire sauce.
Shape this mixture into a loaf shape and put it on a lightly greased broiler rack.
Put the rack in a foil-lined broiler pan.
Bake for 45 minutes.
Stir the rest of the Worcestershire sauce with the tomato paste, tomato sauce and 1 tablespoon ketchup.
Pour this tomato mixture over the meatloaf and bake for 12 minutes or until no longer pink in the middle.
Let the meatloaf stand for 10 minutes then serve.