8 sandwich buns
Shaved ham
Swiss or Mozzarella slices
6 Tbsp. butter
4 tsp. brown sugar
2 tsp. plain mustard
2 tsp. Worcestershire sauce
1 tsp. poppy seeds
In small saucepan, melt butter with brown sugar, mustard, Worcestershire sauce and poppy seeds. Bring to boil, then remove from heat and cover for 10 minutes. In the meantime, arrange the bottoms of each bun in a 9x13 pan. Build sandwiches using a layer of ham, then cheese, then more ham. Spread a tablespoon or so of the slightly cooled sauce on the inside of each bun top and place on the sandwich. Pour and spread the remaining sauce over the tops of all the buns, cover with foil and refrigerate 4 (or several) hours. Bake at 325° for 15 minutes, remove foil, and bake another 15 minutes.
The original recipe says that these can be frozen with much success, although I haven't tried it and therefore can't comment on it. If it works for you, please let me know!