2 sticks butter, softened
3 tbsp. prepared mustard
3 tbsp. poppy seeds
1 med. onion, chopped fine
1 tsp. Worcestershire sauce
4 pkg. Pepperidge Farm Party Rolls
Sliced ham and Swiss cheese

Combine first 5 ingredients. Spread on sliced rolls. Place a slice of ham and cheese on each roll. Return rolls to foil pan. Wrap in foil and bake at 400 degrees for 10 to 15 minutes until heated through.