1. Preheat oven to 350 degrees. In a medium size bowl, mix the ground beef with the garlic powder, salt and pepper. Use your hands to mix the seasoning into the beef.

2. Place the ground beef into a 9×13 baking dish. Press the beef down into an even layer. Bake for 20 minutes.

3. While the beef is cooking, drizzle olive oil in a small skillet on medium heat. Once hot, add the chopped onions and cook until soft or starting to brown.

4. When the beef is done coking, pour the excess grease out of the baking dish.

5. Prepare a sheet pan with parchment paper or silicone mat. Cut the Hawaiian Rolls in half lengthwise and place the bottom half on the sheet pan.

6. Transfer the large beef patty and place it on top of the bottom layer of Hawaiian Rolls. Then cover the beef layer with the onions.

7. Layer the cheese slices over the onions and then place the tp half of the Hawaiian Rolls over the cheese.

8. For the sauce, in a small bowl mix together the melted butter, salt, brown sugar, Worcestershire sauce and dijon mustard. Brush or pour the sauce over the top of the Hawaiian Rolls and make sure all the tops are covered. Sprinkle sesame seeds over the rolls as well, if desired.

9. Bake at 350 degrees for 20 minutes until the cheese is melty and the tops of the rolls are toasted. Remove and let cool slightly. Cut and enjoy!