In a medium bowl, thouroughly combine meat, eggs, oats, onion, half the toamto sauce, thyme, marjoram and celery salt. Shape into a loaf to fit a 9x5 loaf pan. Shape the loaf so meat does not touch sides of the dish. Cover with waxed paper. Microwave at full for 5 minutes. Pour off juices. Stir brown sugar, worcestershire sauce and mustard into remaining toamto sauce. Spoon tomato glaze over the loaf coating the entire top and sides. Give the dish a half turn. Cover with waxed paper. Microwave at 30% for 17 to 20 minutes or until a microwave meat thermometer inserted in the center of the loaf registers 170F. Cover with foil and let stand 5 minutes. Temperatures will rise about 10F during stand time