01 -
In a large mixing bowl, combine ground beef with garlic powder, salt, and black pepper. Mix by hand until seasonings are evenly distributed.
02 -
Melt butter in a large skillet over medium heat. Place five portions of sliced onions into the skillet, shaping each into a small mound.
03 -
Form beef mixture into five equal-sized balls. Place one beef ball on top of each onion mound in the skillet.
04 -
Using a sturdy spatula, press each beef ball firmly to flatten it over the onions, ensuring the onion layer is fully covered by the meat.
05 -
Allow burgers to cook onion-side down until onions are deeply browned and edges are crisp, approximately 6 minutes. Carefully flip each patty and continue cooking to desired doneness.
06 -
Place a slice of cheddar cheese on the base of each hamburger bun. Set the cooked patty with onions onto the cheese, followed by any additional desired toppings.
07 -
Close with the top bun and serve immediately while hot.