Add the chopped onion to a skillet over medium high heat with the butter
Let the onions cook down until they start to caramelize
Cook ground beef in a skillet over medium high heat and season with salt, pepper, paprika, and garlic powder
Drain any extra grease from the skillet
Slice King's Hawaiian rolls in half and spread mayo over the inside of the rolls
Toast the Hawaiian rolls in a skillet until golden brown
Spray a sheet pan or baking dish with cooking spray and put the rolls toasted side down
Add a layer of American cheese
Add the ground beef on top of the cheese
Top with the cooked onions
Add more cheese on top
Put the tops of the slider rolls on toasted side up
Bake at 350°F for about 10 minutes or until the cheese is melted
Dip in the homemade burger sauce and enjoy
