For A Juicier Smash Burger, Try Cooking It In The Air Fryer - Tasting Table
Briefly

For the juiciest burgers, use high quality ground beef with a higher fat content, handle the meat gently, and preheat the air fryer. Avoid overcrowding the fryer basket and let the burgers rest after cooking.
Parchment paper can help keep things clean when making smash burgers in the air fryer by providing a barrier between the meat and smashing tool. Add cheese to the patties near the end of cooking to let it melt.
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