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Ingredients
1 large onion, peeled, halved and thinly sliced
salt and pepper
1 lb ground beef
1 tablespoon butter
1 tablespoon vegetable oil
4-8 slices American cheese
Mayo, mustard and pickles, for serving
4 hamburger buns, toasted
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1 large onion, peeled, halved and thinly sliced
salt and pepper
1 lb ground beef
1 tablespoon butter
1 tablespoon vegetable oil
4-8 slices American cheese
Mayo, mustard and pickles, for serving
4 hamburger buns, toasted