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#### Step 1: Prepare the Special Sauce
1. In a small bowl, combine the **mayonnaise**, **ketchup**, **Dijon mustard**, **hot sauce**, **Worcestershire sauce**, **garlic powder**, and **onion powder**.
2. Stir the ingredients together until smooth and well-combined.
3. Taste the sauce and adjust the seasoning with salt and pepper as needed. Set the sauce aside to allow the flavors to meld together.
#### Step 2: Cook the Caramelized Onions
1. In a skillet, heat a little oil or butter over medium heat.
2. Add the thinly sliced **onions** and cook them slowly, stirring occasionally, until they are golden brown and caramelized—this will take about 15-20 minutes.
3. Once caramelized, remove the onions from the skillet and set them aside. This will give the onions a sweet, deep flavor that perfectly complements the savory patty melts.
#### Step 4: Toast the Bread
1. In the same skillet, melt **butter** over medium heat.
2. Place two slices of **bread** in the skillet and toast them until golden brown on both sides. Remove the toasted bread from the skillet and repeat with the remaining slices of bread.
3. Once the bread is toasted, add a slice of cheese to each piece while they are still in the pan, allowing it to melt slightly.
#### Step 5: Assemble the Patty Melts
1. On one slice of toasted bread, spread a generous amount of the **special sauce**.
2. Add a cooked **beef patty** on top of the sauce-covered bread.
3. Top the patty with some **caramelized onions**.
4. Carefully place another slice of toasted bread, with the melted cheese side facing down, on top of the patty and onions, creating a sandwich.
5. Repeat this process with the remaining patties, bread, and special sauce.
#### Step 7: Serve and Enjoy!
– Serve the **Cheesy Patty Melts** hot, with extra special sauce on the side for dipping, if desired. Pair with crispy fries, a side salad, or a pickle for a complete meal.
### Why You’ll Love Cheesy Patty Melts with Special Sauce:
Cheesy **Patty Melts with Special Sauce** are the perfect combination of juicy beef, melted cheese, savory caramelized onions, and creamy, tangy sauce—all between two slices of golden, crispy bread. The special sauce gives the sandwich a unique twist, making it even more irresistible. This meal is perfect for a quick weeknight dinner, weekend brunch, or even a game-day treat. Once you make these at home, you’ll never want to go back to the standard burger again.