Cooked ham
1 1/2 tsp. poppy seeds
1 sm. grated onion
1/2 lb. soft butter
Swiss cheese
3 tsp. mustard or celery seeds
1 tsp. Worcestershire sauce

Make paste of butter, onion, seeds, sauce and mustard. Spread on both sides of bun. Add ham and cheese and wrap in foil. Heat in 300 degree oven for 20 minutes.