For the Burgers:

Lightly shape ground beef into 4 patties. Suggestion: make patties about 1/2 inch thick and about 1/2″ larger than the diameter of the bun. Spinkle each side with salt and pepper.

Sprinkle a light layer of salt in bottom of heavy skillet or griddle, place over high heat, and when the salt just begins to brown, add the burgers. Cook, until well browned on one side and until the color reaches halfway up the burger.

Turn and sear the other side. When seared, turn down the heat, and cook about a minute longer for rare, adjusting the time for a more well-done burger.

In the meantime, heat the green chili and prepare the cheese and onion; have any sides ready.

When burgers are finished, for each serving, place the bottom bun on the plate. Top with the burger. Add the top bun if using. Add cheese if using slices,, then hot green chili. If using shredded cheese, add the hot green chili and then top with the cheese. Sprinkle with onion and serve.