Patty Melts with Secret Sauce are a savory, comforting dish that brings the classic diner experience right to your kitchen. Imagine a juicy beef patty, caramelized onions, melted cheese, all sandwiched between perfectly toasted bread and topped with a delicious secret sauce. This recipe makes for an indulgent meal that’s perfect for any time you’re craving comfort food.

Table of Contents

• Introduction
• Ingredients
• Instructions
• Cook Notes
• Variations
• Serving Suggestions
• Frequently Asked Questions
• Conclusion

Ingredients

Beef Patties

• 1 1/2 pounds ground beef (80/20 blend recommended)
• 1/2 teaspoon salt
• 1/2 teaspoon black pepper
• 1/2 teaspoon garlic powder
• 1/2 teaspoon Worcestershire sauce

Onions

• 2 large yellow onions, thinly sliced
• 2 tablespoons butter
• 1 tablespoon olive oil
• 1/2 teaspoon salt

Secret Sauce

• 1/2 cup mayonnaise
• 2 tablespoons ketchup
• 1 tablespoon Dijon mustard
• 1 teaspoon Worcestershire sauce
• 1 teaspoon pickle relish
• 1/4 teaspoon smoked paprika

Sandwich Ingredients

• 8 slices rye bread (or sourdough)
• 4 tablespoons butter, softened
• 8 slices Swiss cheese (or cheddar for a different flavor)

Instructions

Step 1: Caramelize the Onions

In a large skillet over medium heat, melt the butter with olive oil. Add the sliced onions and salt. Cook, stirring occasionally, for 20-25 minutes until the onions are golden brown and caramelized. Remove from the skillet and set aside.

Step 2: Prepare the Beef Patties

While the onions are cooking, combine the ground beef, salt, black pepper, garlic powder, and Worcestershire sauce in a mixing bowl. Mix until just combined, being careful not to overwork the meat. Form the mixture into 4 equal-sized patties, about the size of the bread slices but slightly thinner.

Step 3: Cook the Patties

In the same skillet over medium-high heat, add the beef patties. Cook for 3-4 minutes per side, or until they reach your desired doneness. Remove from the skillet and set aside.

Step 4: Make the Secret Sauce

In a small bowl, whisk together the mayonnaise, ketchup, Dijon mustard, Worcestershire sauce, pickle relish, and smoked paprika until well combined. Set aside.

Step 5: Assemble the Patty Melts

Butter one side of each slice of rye bread. Place 4 slices of bread, butter-side down, on a clean surface. Spread a generous amount of the secret sauce on the non-buttered side. Add a slice of Swiss cheese, followed by a beef patty, a portion of the caramelized onions, another slice of Swiss cheese, and top with another slice of bread (butter-side up).

Step 6: Cook the Patty Melts

Heat a large skillet or griddle over medium heat. Place the assembled sandwiches in the skillet and cook for 3-4 minutes per side, or until the bread is golden brown and the cheese is melted. Press down gently with a spatula while cooking to help everything meld together.

Step 7: Serve

Cut the Patty Melts in half and serve hot, with extra secret sauce on the side for dipping if desired.

Cook Notes

• Bread Choice: Rye bread is traditional for patty melts, but sourdough or even Texas toast works well too.
• Onion Cooking Tip: Be patient while caramelizing the onions. Cooking them slowly over medium heat ensures they develop a deep, sweet flavor without burning.
• Cheese Choices: While Swiss cheese is classic, you can use cheddar, provolone, or pepper jack for a different flavor twist.

Variations

1. Spicy Patty Melt

Add sliced jalapeños or a pinch of red pepper flakes to the beef patties for a spicy kick. You can also use pepper jack cheese for extra heat.

2. Mushroom Patty Melt

Add sautéed mushrooms to the sandwich along with the onions for a hearty, umami boost.

3. Bacon Patty Melt

Add crispy bacon slices to the patty melts for an extra layer of savory goodness that pairs perfectly with the secret sauce.

Serving Suggestions

• French Fries: Serve with crispy French fries or sweet potato fries for a classic diner experience.
• Coleslaw: A side of coleslaw adds a refreshing crunch that pairs well with the richness of the patty melt.
• Pickles: Serve with dill pickles or pickle spears on the side for an extra tangy contrast.

Frequently Asked Questions

Can I Make Patty Melts Ahead of Time?

Patty melts are best served fresh, but you can make the beef patties and caramelized onions ahead of time. Reheat them before assembling the sandwiches for a quicker meal.

How Do I Store Leftovers?

Store any leftover patty melts in an airtight container in the refrigerator for up to 2 days. Reheat in a skillet over medium heat to maintain the crispy texture.

Can I Use a Different Type of Meat?

Yes, you can use ground turkey or ground chicken as a leaner alternative to beef. Adjust the seasonings to taste.

Patty Melts with Secret Sauce are the ultimate comfort food, combining juicy beef, caramelized onions, melted cheese, and perfectly toasted bread. This classic diner favorite is easy to make at home and is sure to be a hit with everyone at the table. Try out the variations or keep it classic—either way, you’re in for a treat!

Did you make this recipe? Share your experience in the comments below and let us know how it turned out!