I found this recipe on another blog. Don't know if it's good or not, but thought it might be worth posting.
1 Pkg. (12) King’s Hawaiian Rolls
½ lb. Sliced Ham
¼ lb. Sliced Swiss Cheese
Make into sandwiches and arrange in baking dish.
1 Stick Melted Butter
2 T. Worcestershire Sauce
1 t. Poppy Seeds
¼ t. Garlic Salt
Pour sauce over sandwiches cover and refrigerate overnight. Bake at 350° until cheese melts (about 15-20 minutes.)