Form beef into 4 patties, roughly 5 inches in diameter.
Season with salt and pepper and place in skillet. With a
metal spatula, press down gently to flatten each against
skillet. Reduce heat to medium. Cook 3 minutes, then flip,
scraping against skillet with spatula so burgers release
cleanly. Cook 3 minutes for medium-rare, then top each
with 1 slice cheese. Broil until cheese begins to melt, 1
minute. Transfer burgers to a plate and keep warm.