A Patty Melt is the love child of a cheeseburger and a grilled cheese sandwich, and it is absolutely glorious. It features a juicy beef patty, caramelized onions, and melted cheese, all sandwiched between buttery, toasted rye bread.
The “secret sauce” is the perfect tangy, creamy finishing touch that ties it all together. This is diner food at its finest, made right in your own kitchen.
The Recipe: Classic Patty Melt with Secret Sauce
Yields: 2 sandwiches
Prep time: 15 minutes
Cook time: 20 minutes
Ingredients
For the Secret Sauce:
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1/4 cup mayonnaise
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1 tablespoon ketchup
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1 tablespoon sweet pickle relish (or dill, if you prefer)
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1 teaspoon Worcestershire sauce
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1/2 teaspoon white wine vinegar (or apple cider vinegar)
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1/4 teaspoon smoked paprika (or regular paprika)
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Pinch of garlic powder and onion powder
For the Caramelized Onions:
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1 large yellow onion, thinly sliced
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1 tablespoon butter or olive oil
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Pinch of salt
For the Patties:
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1 lb (450g) ground beef (80/20 is ideal for juiciness)
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Salt and black pepper
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4 slices Swiss cheese (or Gruyère)
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8 slices rye bread (or marbled rye)
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4 tablespoons butter, softened (for grilling the bread)
Instructions
1. Make the Secret Sauce:
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In a small bowl, whisk together all the sauce ingredients: mayonnaise, ketchup, relish, Worcestershire sauce, vinegar, paprika, garlic powder, and onion powder.
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Cover and refrigerate until ready to use. This allows the flavors to meld.
2. Caramelize the Onions:
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Heat a skillet or cast-iron pan over medium heat. Add the butter (or oil) and the sliced onions. Sprinkle with a pinch of salt.
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Cook, stirring occasionally, for 15-20 minutes, until the onions are soft, sticky, and deep golden brown. If they start to dry out or burn, add a tablespoon of water to the pan. Once done, transfer them to a bowl and set aside. Do not wipe out the pan.
3. Form and Cook the Patties:
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Divide the ground beef into two equal portions. Shape them into thin, rectangular patties, roughly the same size as your bread slices. They will shrink slightly as they cook. Season both sides generously with salt and pepper.
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Return the same skillet to medium-high heat. Add the patties and cook for 3-4 minutes per side for a nice crust and medium doneness.
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During the last minute of cooking, place a slice of Swiss cheese on each patty and cover the pan to let it melt. Remove the patties from the pan and set aside.
4. Assemble and Grill the Sandwiches:
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Wipe the skillet clean and reduce the heat to medium.
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Spread the softened butter on one side of each slice of rye bread. This is the outside of your sandwich.
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Place 4 slices of bread, buttered-side down, on a work surface.
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Spread a generous amount of the secret sauce on each slice.
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On two of the slices, build your sandwich: Place a cheese-topped patty, followed by a pile of caramelized onions, and then the second slice of bread (buttered-side up).
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Carefully transfer the assembled sandwiches to the skillet. Cook for 3-4 minutes per side, pressing down gently with a spatula, until the bread is golden brown and crispy, and the cheese is fully melted.
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Serve immediately, with extra secret sauce on the side for dipping.
Tips for the Perfect Patty Melt
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The Bread Matters: Rye bread is traditional and provides that classic deli flavor. Marbled rye (light and dark) is also a great choice. Sourdough works well too if you’re not a rye fan.
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Thin Patties are Key: You want the patty to be thin so it cooks quickly and doesn’t make the sandwich too tall and difficult to eat. It should be a cohesive, flat sandwich.
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Don’t Skip Caramelizing: This step adds a deep, sweet flavor that balances the savory beef and tangy sauce. It’s worth the 15-20 minutes.
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Use a Heavy Pan: A cast-iron skillet is ideal for getting that perfectly even, crispy, golden-brown crust on the bread.
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Cheese Choices: Swiss is classic, but Gruyère adds a nutty sophistication. Provolone or even cheddar can work in a pinch. Using two slices (one on the bottom, one on top of the patty) ensures maximum cheesiness.
Enjoy your incredibly delicious, diner-style patty melt