The secret to the ultimate patty melt lies in the balance of textures and flavors, achieved by the combination of savory, juicy beef, golden caramelized onions, and a delightful medley of melted cheeses. But it’s the secret sauce that brings it all together – its tangy, smoky blend elevates the sandwich, adding richness without overpowering the classic taste. This creamy sauce’s subtle sweetness and hint of heat perfectly complement the buttery, toasted rye bread, making each bite irresistible. Whether served for a casual lunch or a cozy dinner, this patty melt is a guaranteed hit.
Ingredients
For the Patty Melts:
- 1 lb ground beef (80/20 blend for juiciness)
- Salt and pepper, to taste
- 1 large yellow onion, thinly sliced
- 4 slices Swiss cheese
- 4 slices American cheese
- 4 slices rye bread
- 2 tbsp butter, softened, plus more for cooking
For the Secret Sauce:
- 1/4 cup mayonnaise
- 1 tbsp ketchup
- 1 tbsp Dijon mustard
- 1 tsp Worcestershire sauce
- 1/2 tsp garlic powder
- 1/2 tsp smoked paprika (or regular paprika)
- Salt and pepper, to taste
Instructions
- Make the Secret Sauce:
In a small bowl, whisk together mayonnaise, ketchup, Dijon mustard, Worcestershire sauce, garlic powder, and smoked paprika. Season with a pinch of salt and pepper. Mix until smooth and set aside. The sauce can be made ahead and stored in the refrigerator for up to three days. - Caramelize the Onions:
Heat a skillet over medium heat. Add a small amount of butter (about 1/2 tbsp) to the pan. Once melted, add sliced onions with a pinch of salt. Cook for about 20-25 minutes, stirring occasionally, until onions are golden brown and caramelized. Reduce heat if they start to brown too quickly. Once done, transfer to a plate. - Form and Season the Beef Patties:
Divide the ground beef into two equal portions and form into oval-shaped patties (roughly matching the shape of the bread). Season both sides with salt and pepper. - Cook the Patties:
In the same skillet, add a small amount of butter or oil and heat over medium-high. Place patties in the skillet and cook for about 3-4 minutes on each side, or until they reach your preferred doneness. Add a slice of Swiss and American cheese on top of each patty during the last minute of cooking to melt. Remove from the pan and set aside. - Assemble the Patty Melts:
Spread a thin layer of butter on one side of each slice of rye bread. Spread a layer of secret sauce on the other side of two bread slices. Place a beef patty with melted cheese on top, then add caramelized onions. Top each with the remaining bread slices (buttered side facing out). - Grill the Sandwiches:
Heat the skillet over medium heat. Place sandwiches in the skillet and cook until the bread is golden and crispy, about 3 minutes per side. Press down gently with a spatula for even browning. - Serve:
Slice each patty melt in half and serve immediately, with extra secret sauce on the side if desired.
