Americanby Cook MediaSmash BurgersPrep10 minCook10 minTotal20 minServes4Keep screen onSaveShareIngredients1 lb (450 g) ground beef, 80/204 soft burger buns4 slices American cheese1 small onion, thinly slicedKosher salt and black pepper2 tbsp butterPickles, ketchup, mustard to serveStepsStep-by-step0 of 6 done1Divide the beef into 8 loose balls. Do not pack them.2Heat a cast-iron skillet over high heat until smoking.3Butter the bun halves and toast cut-side down. Set aside.4Drop 2 balls in the pan, smash flat with a spatula, season with salt and pepper.5Cook 90 seconds until the edges are crisp. Scrape up, flip, top with cheese, cook 30 seconds.6Stack 2 patties per bun with onion, pickles, ketchup, and mustard.NotesUse a stiff metal spatula and press hard for the first 10 seconds only.Photo: JIP · Wikimedia Commons · CC BY-SA 4.0