Beat egg lightly in medium bowl, add Accent, salt, pepper, basil, thyme, ketchup, mustard and bread crumbs. Dissolve boullion cubes in boiling water, add to bowl and mix well until all ingredients are very well blended. Mix in celery, onion and cheese. Break up ground beef and add to bowl, mix lightly but thoroughly with fork.
In a shallow baking pan, shape mixture into a 12"x5" oval loaf, or press meat mixture lightly into a 9x5x3-inch loaf pan.
Bake uncovered in 375 oven 1 hour to 1 hour and 10 minutes.