SAUCE:

1 stick butter
1 tsp. Worcestershire sauce
1 tsp. mustard
1 tsp. onion flakes
1 tsp. poppy seed

Mix all ingredients. Set aside:

24 dainty dinner rolls
8 oz. ham
8 oz. Swiss cheese

Split rolls. Layer ham and cheese on each roll. Pour sauce over ham and cheese. Cover with top half of rolls. Spread small amount of mixture on top. Bake at 350 degrees for 15 minutes.