1: Melt butter in a medium Nonstick skillet over medium heat. Add onion & celery 8 minutes or just until tender.
2: shake mixture, ground beef, 1 tbsp. sauce, bread crumbs, and next ingredient in a big bowl. Shape into a 8 x 6 inch loaf, place on a lightly greased broiler tray. Place tray in an aluminum Foil lined broiler pan.
3: Bake at 300° for 40 min. Stir together remaining 1 tablespoon sauce, tomato sauce, tomato paste, and 1 tablespoon ketchup until blended, pour evenly over meatloaf, and bake 10 to 15 min.more, or until no longer pink in center.