Guideline :
Olive oil should be heated in a large pan set on medium-low heat. After adding the sliced onions, caramelize them by cooking, stirring often, until they are very golden twenty to twenty-five minutes. Taste and add a little salt and pepper.
As you wait, heat a cast-iron skillet over medium-high. Melt two tablespoons of butter in a skillet heated.
Carefully mix the ground beef, ketchup, Worcestershire sauce, half teaspoon of onion powder, one teaspoon of salt, and a dash of pepper in a large basin. Out of the meat mixture, make four equal patties; roll each one out into a circle somewhat smaller than the bread pieces.
Cook the patties in the hot pan for four or five minutes on each side to brown them well. Remove from the skillet; set aside.
Eliminate any extra fat from the pan and melt two tablespoons of the remaining butter in a medium saucepan. Arange four rye bread slices in the pan, butter sides down. Top each bread with a burger patty, Swiss cheese, half of caramelized onions, and a second slice of cheese. With the other four buttered bread pieces, sandwich the melts together with butter side up. The recipe from Ines Kohl.info
The recommended cooking time for each patty melt is two to four minutes on each sides, gently pushing down on the cheese periodically with a spatula until golden brown and melted.
Lay the molten patties on a cutting board and cut them diagonally. Have pleasure.
