Preheat oven to 350°F. Combine Ground Beef, bread crumbs, 1/2 cup ketchup, onion, egg, Worcestershire, garlic, thyme, pepper and salt in large bowl, mixing lightly but thoroughly. Shape beef into 8 x 4-inch loaf on rack in aluminum foil-lined broiler pan.
Place on upper oven rack in 350°F oven. Bake 45 to 55 minutes, until instant-read thermometer inserted into center registers 160°F; brush with remaining 1/4 cup ketchup during last 10 minutes, if desired. Let stand 10 minutes. Cut into slices.