2 pkgs. party rolls
6 slices ham, thin
1 stick butter
1 sm. grated onion (optional)
3 tbsp. poppy seeds
3 tbsp. mustard
1 tbsp. Worcestershire sauce
1 c. grated Swiss or American cheese or both

Mix butter and onion. Add mustard and poppy seed and Worcestershire sauce. Cut party rolls lengthwise so there is a top and bottom. Spread both sides with the mixture. Layer ham bottom roll and sprinkle on cheese. Replace top roll. Wrap in foil. Bake at 400 degrees for 10-15 minutes.