1 1/3 sticks of butter
3 tbsp. mustard
1 1/2 tsp. Worcestershire sauce
1 med. onion
1 1/2 tbsp. poppy seed
2 pkgs. Pepperidge Farm rolls
4 to 6 slices cooked ham
4 to 6 slices Swiss cheese

Melt all ingredients together. Spread mixture on both sides of cut Pepperidge Farm rolls. Add ham, then cheese. Close rolls. Cover with foil. Bake at 350 degrees for 10 minutes.