1/2 cup butter, melted
2 Tbsp Dijon mustard
2 tsp Worcestershire sauce
1 1/2 Tbsp poppy seeds
1 1/2 Tbsp light brown sugar
1/4 tsp onion power
2 pkgs Hawaiian sweet rolls (regular, not whole wheat)
2/3 lb thinly sliced Boar's head ham (or ham of your choice)
1/3 lb thinly sliced Swiss cheese
1. Preheat oven to 350 degrees.
2. Grease a 9x13" baking dish, and set aside.
3. In a small bowl, whisk together the first 6 ingredients; then set aside and allow to congeal just a bit (to spreading consistency).
4. Take the rolls out of the bag, but do not remove from the cardboard sheet. (This will make it a hell-uv-a lot easier to keep them from sliding around while you're slicing them.) With a large serrated knife, slowly slice the rolls in half horizontally, trying not to break each individual roll apart. (Again, trying to make your life easier here. I did that on my first go-around, and it made things way more difficult!)
5. Place the bottom half of the rolls into your greased baking dish. (I was only able to fit 20 rolls in my baking dish, but depending on the size of your pan, you may be able to fit all 24.) Spread a thin layer of the butter mixture on the bottom half. Then, place a thin layer of Swiss cheese and 3-4 layers of ham on each. Place the top halves back onto the rolls.
6. Melt the remaining butter mixture for about 30 seconds, so it's in liquid form again. Quickly whisk so ingredients are combined. Pour over the tops of all the sandwiches, allowing the mixture to seep into the cracks. You may have a little bit of the butter mixture leftover if you don't end up using all 24 rolls. Cover the rolls with just enough of the butter mixture, so there's a thin layer on the bottom of the pan. You don't want them completely soaked in the butter mixture.
7. Cover the rolls with aluminum foil, and bake for 10-15 mins, covered. Remove foil, then bake another 10 mins, until the rolls are lightly browned and the cheese has melted. Slice into individual sandwiches through the ham and cheese layers, and serve!
Adapted from a recipe found on Allrecipes.com