1. Add pork, butter, oregano, cumin and garlic powder to a small skillet. Heat over medium high heat. 2. Preheat oven to 350. 3. Cut rolls in half lengthwise. Add mustard to the bottom of the bun and place in prepared baking dish. 4. Add 1 slice on top of each bun. Break cheese in quarters and place 2 squares on top of each ham. 5. Cut ham in half so you have six pieces. Place on top of cheese. 6. Divide pork and place equally on each sandwich. 7. Top with pickles and top of bun. 8. Mix together butter and garlic and use a pastry brush to spread on top of each bun. Bake for 20 minutes or until cheese is melted and sandwiches are heated through.