A patty melt sits perfectly between a burger and a grilled cheese—crispy, buttery bread, juicy beef, sweet caramelized onions, and gooey melted cheese. What makes this version stand out is the rich, tangy “secret sauce” that ties everything together into a comforting, crave-worthy meal.

Here’s a detailed, step-by-step guide to making Patty Melts with Secret Sauce from scratch.

🥪 Patty Melts with Secret Sauce

🛒 Ingredients

For the Patty Melts:

• 500g ground beef (preferably 80/20 for juiciness)
• Salt and black pepper (to taste)
• 1 large onion (thinly sliced)
• 6 slices of rye bread (or any sturdy bread like sourdough)
• 6 slices of cheese (Swiss or cheddar work best)
• 2–3 tablespoons butter

For the Secret Sauce:

• 3 tablespoons mayonnaise
• 1 tablespoon ketchup
• 1 teaspoon mustard
• 1 teaspoon pickle relish (or finely chopped pickles)
• ½ teaspoon garlic powder
• ½ teaspoon paprika
• A pinch of salt and pepper

🔪 Step 1: Prepare the Secret Sauce

In a small bowl, combine:

• Mayonnaise
• Ketchup
• Mustard
• Pickle relish
• Garlic powder
• Paprika

Mix everything until smooth and creamy. Taste and adjust seasoning if needed.
Set it aside in the fridge so the flavors can develop while you cook.

🧅 Step 2: Caramelize the Onions

Heat a pan over medium heat and add a little butter or oil.
Add the sliced onions and cook slowly, stirring occasionally.

• Cook for about 15–20 minutes
• Let them turn soft, golden, and slightly sweet

Don’t rush this step—caramelized onions add a deep, rich flavor that defines a good patty melt.

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