1 c. butter
3 tbsp. poppy seed
3 tsp. Worcestershire sauce
3 tbsp. prepared mustard
1 med. onion, minced
1 lb. boneless ham, cooked & minced
12 oz. Swiss cheese, grated
60 sm. party rolls

Preheat oven to 350 degrees. Cream first 4 ingredients. Add onion, ham and cheese; mix well. Split rolls and place cut side up in pan. Spoon mixture on and cover with remaining roll half. Cook for 10 minutes or until heated.