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a patty melt, cut in half and stacked to show the inside. french fries are next to it on a wooden board. a hand is holding the sandwich.
5 from 20 votes

Patty Melt

A classic homemade Patty Melt sandwich is easy to make with fresh ground beef, perfectly caramelized onions, and melty swiss cheese.
Author Diana
Servings 2 Sandwiches
Prep Time 5 minutes
Cook Time 25 minutes
Total Time 30 minutes

Ingredients

  • 6 tablespoons (78 grams) butter softened
  • 2 yellow onions thinly sliced
  • ¼ cup (60 ml) water
  • 8 ounces (225 grams) ground beef I used chuck 80%
  • 1 teaspoon salt
  • ¼ teaspoon ground black pepper
  • 4 slices rye bread
  • 2 tablespoons (30 ml) mayonnaise
  • 8 slices swiss cheese

Instructions

  • In a large skillet, melt 2 tablespoons of butter and add the sliced onions. Cook while stirring occasionally for 2 minutes, then add a tablespoon of water and continue cooking and stirring while spreading the onions evenly on the pan. Keep adding water whenever the onions dry out and start sticking to the pan. Cook until the onions are soft and caramelized (reached a rich brown color). The process takes about 15 minutes. Remove the onions from the pan and set them aside.
  • Season the beef with salt and pepper, and shape into balls and flatten them and season with salt and pepper again. Then in the same skillet melt 1 tablespoon of butter, and add the beef and flatten as you would do with a smashed burger. Cook on one side for 2 minutes without turning to allow a brown crust to form, then turn and cook on the other side for 1-2 minutes. Remove onto a plate, and set aside. Wipe the skillet clean with paper towels.
  • Spread softened butter and mayonnaise over one side of the bread, and place in the skillet to toast for 1-2 minutes or until golden brown.
  • Butter the other side, flip and cook for a minute then reduce the heat to medium-low and layer 2 slices of cheese followed by the beef patty, caramelized onions, 2 more slices of cheese, and cover with bread. Allow to cheese to melt. Remove onto a plate, slice in half and serve.

Notes

  • Use an oven-proof skillet for this recipe so that you can put the whole thing in the oven to melt the cheese quickly.
  • Don't rush the onions. It will take at least 15 minutes for the onions to get to a rich brown caramelized color. 
  • Try using two types of cheese instead of just Swiss. Swiss plus American cheese is delicious, or you could add shredded cheddar or gruyere to the mix.
  • Any type of ground meat will make a delicious patty melt. Use ground turkey, ground chicken, or vegan ground meat like Beyond Burger. 
  • To Store: Keep leftovers in the fridge and enjoy within 2 days. Try to eat your sandwich directly after making it though, as it will be the best then! 
  • Caramelized onions can be made up to 2 days ahead of time, keep them in a sealed container in the fridge until you're ready to make lunch. 

Nutrition

Serving: 1sandwich | Calories: 1162kcal | Carbohydrates: 42g | Protein: 45g | Fat: 91g | Saturated Fat: 45g | Polyunsaturated Fat: 9g | Monounsaturated Fat: 27g | Trans Fat: 3g | Cholesterol: 240mg | Sodium: 1850mg | Potassium: 638mg | Fiber: 6g | Sugar: 7g | Vitamin A: 1631IU | Vitamin C: 8mg | Calcium: 712mg | Iron: 4mg