1 c. butter
3 tbsp. regular mustard
3 tbsp. poppy seed
1 med. onion, chopped (optional)
1 tbsp. Worcestershire sauce
3 pkg. Pepperidge farm rolls
1 lb. shredded ham
1/2 lb. grated Swiss cheese

Mix butter, mustard, poppy seed, onion and sauce together. Spread on both sides of rolls. Fill with ham and cheese. Cover and heat at 350 degrees for 10 minutes.