3 pkg. dinner rolls
1 c. butter
3 tbsp. poppy seeds
1 tsp. Worcestershire sauce
3 tbsp. mustard
1 med. onion, chopped
1 lb. boiled ham
3/4 lb. grated Swiss cheese

Slice rolls in middle, cream butter, poppy seed, Worcestershire, mustard and onion. Spread on all rolls, layer ham and cheese. Place rolls back together. Bake at 400 degrees until cheese is melted.