1/2 lb. soft butter
3 tbsp. prepared mustard
3 tbsp. poppy seeds
1 tsp. Worcestershire sauce
1 tbsp. minced onion
Ham slices
Swiss cheese
Pepperidge Farm party rolls (2 pkgs.)

Blend first 5 ingredients and spread on rolls. Add ham slices and cheese. Return rolls to tray that they were packaged in. Cover trays with foil. Bake at 400 degrees for 20 minutes until thoroughly heated.