01 -
Slice onions very thin.
02 -
Form beef into 4 equal balls.
03 -
Heat griddle/skillet over medium-high.
04 -
Smash beef balls, season, top with onions.
05 -
Cook 2 minutes without disturbing.
06 -
Flip, scraping up crispy bits.
07 -
Steam buns on top of patties.
08 -
Add cheese, serve when melted.