Prep time: 5 mins | Cook Time: 45 mins | Total time: 50 mins | Yield: 4 sandwiches

Enjoy a filling sandwich for brunch or dinner with this delicious sandwich layered with flavor-packed ground beef patty, caramelized onions, melty cheese, and secret sauce. This patty melts with secret sauce and is a big hit at home. To save time, you can make the secret sauce in advance and keep it in the fridge for a few days.


Patty melts:

3 medium Vidalia onions, thinly sliced

1½ lbs ground beef

2 tsp Worcestershire sauce

8 tbsp unsalted butter

12 slices of sourdough bread

½ c. Secret Sauce

6 slices of Cheddar cheese

1 tsp kosher salt

½ tsp ground black pepper

Secret Sauce:

¼ c. mayonnaise

¼ c. Dijon mustard

½ tsp hot sauce

1 tbsp barbecue sauce


Secret sauce:

Step 1: In a small bowl, place the mustard, mayonnaise, barbecue sauce, and hot sauce. Mix well until blended. Cover the bowl and keep it in the fridge for up to 3 days.

Patty melts:

Step 2: In a large bowl, place the ground beef, Worcestershire sauce, salt, and pepper. Mix well until just combined and form the mixture into six oval patties.

Step 3: To a medium-sized cast-iron skillet, melt 2 tbsp butter over medium heat. Once the butter has melted, add the onions and cook until soft and golden brown, stirring constantly.

Step 4: To a large cast-iron skillet, transfer the ground beef patties and cook for about 2 minutes over medium-high heat until the patties are browned and completely cooked. Set the patties aside when done and wipe the skillet clean.

Step 5: Spread 1 tbsp secret sauce onto one side of bread and top with 2 tbsp caramelized onions, a slice of cheese, 1 patty, and drizzle with another 1 tbsp secret sauce. On top, place another slice of bread. Do the same for the rest of the bread, Secret Sauce, caramelized onions, cheese, and patties.

Step 6: Return the cleaned large skillet to the stovetop and heat over medium-high heat. Add 2 tbsp butter and melt. Individually cook the sandwiches for about 3 minutes on each side until golden brown and heated through, flipping only once.

Step 7: Serve the sandwiches immediately. Enjoy!


For this recipe, you can swap unsalted butter with margarine. Simply adjust the salt and butter.

You can keep any leftover secret sauce in an airtight container and store it in the fridge. Before using, let it come to room temperature.

Nutritional Facts:

Calories: 694 kcal | Carbohydrates: 42g | Protein: 27g | Total Fat: 46g | Cholesterol: 103mg | Sodium: 1009mg | Calcium: 229mg