If you’re in the mood for a sandwich that blends the comfort of a grilled cheese with the bold flavor of a classic burger, the patty melt is the perfect choice. This timeless favorite brings together tender ground beef patties, deeply caramelized onions, and melted Swiss cheese, layered between golden, buttery rye bread. It’s hearty, flavorful, and always hits the spot.

Ideal for a casual dinner, game-day comfort food, or a weekend treat, this recipe also includes a creamy, tangy homemade sauce that takes each bite to the next level.
Ingredients
For the Patty Melts:
- 1 lb ground beef (80/20 blend recommended)
- Salt and pepper, to taste
- 8 slices of rye bread (or substitute sourdough or Texas toast)
- 8 slices of Swiss cheese (or use cheddar, provolone, or a combination)
- 2 large yellow onions, thinly sliced
- 4 tablespoons butter, divided
Optional Toppings:
- Lettuce, tomato slices, pickles
- Additional condiments such as mustard or ketchup
For the Secret Sauce:
- ¼ cup mayonnaise
- 2 tablespoons ketchup
- 1 tablespoon sweet pickle relish
- ½ teaspoon garlic powder
- ½ teaspoon onion powder
- A dash of hot sauce (optional)
Instructions for the Sauce:
In a small bowl, combine all the ingredients. Mix well and refrigerate for at least 15 minutes before using to allow the flavors to develop.
Instructions
- Form the Patties
Divide the ground beef into four even portions and shape them into flat patties slightly larger than your bread slices. Season both sides with salt and pepper. - Cook the Patties
Heat 1 tablespoon of butter in a large skillet over medium-high heat until melted. - 4o mini Cook the patties for about 4 to 5 minutes on each side, or until browned and cooked through. Transfer to a plate and set aside.
- Caramelize the Onions
Using the same skillet, melt the remaining butter over medium-low heat. Add the sliced onions and cook slowly, stirring occasionally, for 15 to 20 minutes until they are soft and golden. - Assemble the Sandwiches
Clean the skillet if needed. Lay out four slices of bread. Top each slice with a piece of cheese, a cooked beef patty, a generous scoop of caramelized onions, and another slice of cheese. Spread the secret sauce on the remaining slices of bread and place them on top to complete the sandwiches. - Grill the Patty Melts
Return the sandwiches to the skillet over medium heat. Press them down lightly with a spatula and cook for 2 to 3 minutes per side until the bread is golden brown and the cheese is melted. Work in batches if needed. - Serve
Let the sandwiches rest for a minute or two before slicing in half. Serve hot with fries, a pickle spear, or a fresh side salad.
Tips for Success
- Choose the right bread: Rye is traditional, but sourdough or brioche also make excellent alternatives.
- Use cast iron if available: It provides even heat and a beautifully crisp crust.
- Prep ahead: The onions and sauce can be made a day ahead and stored in the fridge to save time.