Preheat your oven to 350°F. To prepare the cheeseburger mixture, preheat a skillet on the stove over medium heat.

Add the ground beef and onions to the skillet and use a spatula to break the beef up. Cook it for about 7-10 minutes, or until there is no more pink in the beef.

Add all of your seasonings into the meat mixture including the: Worcestershire sauce, seasoned salt, garlic powder, onion powder, and black pepper.

Stir all of the seasonings into the beef until it is fully combined. Now add in the mayonnaise, ketchup, and mustard and stir it until it is fully mixed in. 

Remove the skillet from the heat, and drain any excess grease.

Use a serrated knife to cut the Hawaiian rolls in half so that you have a top and bottom bun. 

Place the bottom half of the buns on a baking sheet. Begin layering the sliders by adding the sliced american cheese, and half of the shredded cheese on the bottom half of the rolls.

Now add the ground beef mixture directly over the cheese, spread it out into one even layer.

Next, sprinkle the remaining shredded cheese directly over the top of the meat mixture, make sure you sprinkle it on evenly, and cover every surface.

Now carefully add the top bun directly on top of the cheeseburger sliders. 

Bake in the preheated oven for about 8-10 minutes, just until the cheese is melted. 

Remove the sliders from the oven and brush the melted butter over the top. Sprinkle with the sesame seeds and enjoy!