Classic Patty Melt Recipe with Caramelized Onions

Make the best Patty Melt at home with this easy, foolproof recipe. A classic American sandwich, the patty melt pairs a thin ground beef patty with sweet caramelized onions, creamy burger sauce, and melted Swiss cheese, all grilled between slices of rye bread for a warm, savory bite that’s perfect any time of day.

patty melt sandwich cut in half stacked up on each other on plate

This patty melt takes inspiration from classic deli sandwiches. It shares characteristics with a Reuben—both are hot, grilled sandwiches made with Swiss cheese and rye bread—but a patty melt uses a seasoned ground beef patty instead of sliced corned beef. The result is a satisfying hybrid of burger and grilled cheese, with the rich sweetness of caramelized onions and the tang of burger sauce tying everything together.

One of the only components that takes extra time is the caramelized onions. While they require patience to develop deep flavor, they are easy to make and can be prepared up to seven days in advance and kept in the refrigerator. With onions already prepared, this recipe comes together quickly—about 20 minutes from start to finish for assembly and cooking.

Ingredients

Below are the main ingredients and why they matter. The combination of rye bread, Swiss cheese, seasoned beef, caramelized onions, and a tangy burger sauce makes a classic patty melt. Quantities and a consolidated ingredient list are provided in the recipe section further below.

Caramelized onions – Slowly cooked onions develop a sweet, savory depth that elevates the entire sandwich. They take 30–45 minutes to caramelize, but can be made ahead and refrigerated for up to a week (or frozen for longer).
Rye bread – Traditional rye adds a slightly tangy, hearty base. Use Jewish rye, dark rye, marble rye, or substitute with sourdough or Texas toast for different textures and flavors.
Unsalted butter – Use softened unsalted butter to toast the bread; the patty and sauce already bring salt, so unsalted butter helps control overall seasoning.
Burger sauce – A creamy condiment made from mayonnaise, ketchup, chopped pickles, and Dijon mustard (or use Thousand Island or Russian dressing). It adds tang and moisture to the sandwich.
Ground beef – Choose 80/20 ground beef (80% lean, 20% fat) for juicy, flavorful patties that stay tender when cooked thin.
Hamburger seasoning – A simple blend of salt, pepper, paprika, garlic powder, and onion powder enhances the beef. If you prefer, substitute 1 teaspoon salt and 1 teaspoon black pepper.
Worcestershire sauce – Adds savory umami to the patties; soy sauce is an acceptable substitute if needed.

Instructions

Follow these clear steps to build and cook perfect patty melts. Prepare caramelized onions and burger sauce ahead if you want the fastest assembly.

Prepare caramelized onions and sauce. If you haven’t already, caramelize the onions and make the burger sauce. Both can be done ahead to streamline cooking.
Form the patties. In a bowl, combine the ground beef, hamburger seasoning, and Worcestershire sauce. Divide into four equal portions and form thin patties about 1/4 inch thick—thin patties are traditional and help the sandwich assemble and grill evenly.
Cook the patties. Preheat a grill, cast-iron skillet, or heavy skillet over medium-high heat. Add the patties and cook about 3 minutes per side, until browned and cooked through to your liking.
Assemble the sandwiches. Spread softened butter on one side of each bread slice. On the other side, spread burger sauce and place two slices of Swiss cheese on each piece of bread with sauce. Top half of the prepared bread slices with caramelized onions. Place a cooked patty on each onion-topped slice and top with the other prepared bread slices, buttered side out.
Grill the assembled melts. Heat a large skillet or griddle pan over medium heat. Place the sandwiches in the pan and grill 3–4 minutes per side, pressing gently with a spatula, until the bread is golden brown and the cheese is melted.
Slice and serve. Remove from heat, slice each sandwich in half, and serve immediately while hot and melty.

patty melt sliced in half and stacked up on a plate

What to serve with it

Serve patty melts as a satisfying main with simple sides. Classic accompaniments include potato chips, a crisp green salad, coleslaw, or French fries. For a diner-style experience, try air fryer fries or animal-style fries.

Recipe variations

Customize your patty melt to mimic favorite restaurant styles or to suit personal taste:

Whataburger-style: Use Texas toast, swap Swiss for Monterey Jack, and use a creamy pepper-style sauce.
Steak ’n Shake-style: Use one slice Swiss and one slice American cheese on each side of the sandwich for a mix of tang and creaminess.
IHOP-style: Replace Swiss with Pepper Jack and add pickled jalapeños for heat.
Jack in the Box-style: Use sourdough instead of rye, add cooked bacon, and combine Swiss with American cheese for a familiar diner flavor.
Waffle House-style: Serve on Texas toast with American cheese for a classic diner take.

Recipe

Patty Melt (Serves 4)

Prep Time: 35 minutes Cook Time: 8 minutes Total Time: 43 minutes

Ingredients

1 cup caramelized onions
8 slices rye bread (or sourdough, Texas toast)
2 tablespoons unsalted butter, softened
1/2 cup homemade burger sauce (or Thousand Island dressing)
16 slices Swiss cheese
1 pound ground beef (80/20)
1 tablespoon hamburger seasoning (or 1 tsp salt + 1 tsp black pepper)
1 teaspoon Worcestershire sauce

Instructions

Prepare caramelized onions up to one week in advance if desired.
Spread butter on one side of each bread slice and burger sauce on the other side. Add two slices of Swiss cheese to the sauce side of each slice.
Top half of the bread slices with caramelized onions and set aside.
Mix ground beef with seasoning and Worcestershire sauce. Form into four thin patties, about 1/4 inch thick.
Cook patties on a preheated grill or skillet over medium-high heat for about 3 minutes per side.
Place cooked patties on the onion-topped bread slices, then top with the remaining bread slices, buttered side out.
Grill assembled sandwiches in a skillet or on a griddle over medium heat, 3–4 minutes per side, until golden and the cheese is melted. Serve hot.

Notes

Caramelized onions can be stored in the fridge up to one week or frozen for up to three months to speed assembly.
To make this recipe gluten-free, use gluten-free bread.