Preheat Blackstone or flattop to medium-high.

Divide beef into 8 loose portions—don’t roll into balls. Season with salt and pepper.

Place a piece of butter on the grill, top with beef, parchment paper, and smash hard with a burger press (count to 10 while pressing).

Cook each burger for 2 minutes, then flip in the same order you placed them. Cook another 2 minutes.

Add cheese in the last minute if desired. Remove and serve hot.

Optional: Butter and toast the buns for 1–2 mins on the flattop before assembling.