Patty Melts with Secret Sauce

Featured in Filling Main Courses.

Patty melts are a classic comfort food featuring juicy ground beef patties, caramelized onions, Swiss and cheddar cheeses, and crispy rye bread. This savory sandwich is elevated with a tangy secret sauce made with mayo, ketchup, pickle relish, and Worcestershire sauce. Perfectly grilled, patty melts are best paired with crispy fries, a fresh salad, or pickle spears for added crunch. Whether on busy weeknights or casual gatherings, these patty melts are a quick yet indulgent treat that’s easy to make at home with simple ingredients.

Clare Greco
Updated on Fri, 09 May 2025 18:52:48 GMT
A close up of a grilled cheese sandwich. Pin it
A close up of a grilled cheese sandwich. | recipesim.com

This hearty patty melt recipe has been my weeknight dinner salvation for years. The combination of juicy beef patties, perfectly caramelized onions, and melty cheese between crispy rye bread creates that classic diner experience right in your own kitchen.

I first made these patty melts during a particularly hectic week when I needed comfort food fast. When my mom tasted it, she immediately rushed over to get the recipe from me, and now it's become her go-to dinner party sandwich as well.

Ingredients

  • Ground beef: forms the juicy foundation choose 80/20 for best flavor and texture
  • Thinly sliced onion: caramelizes beautifully adding sweet depth to each bite
  • Rye bread: provides the perfect sturdy base with its distinctive flavor
  • Swiss cheese: melts wonderfully and adds a slight nutty flavor
  • Cheddar cheese: brings that sharp tangy note that complements the beef
  • Butter: creates that golden crispy exterior everyone loves
  • Mayonnaise: forms the creamy base for our secret sauce
  • Ketchup: adds the perfect touch of sweetness and acidity to the sauce
  • Sweet pickle relish: brings tiny pops of tangy sweetness throughout
  • Worcestershire sauce: gives that umami depth that makes people ask for your secret

Step-by-Step Instructions

Prepare the Secret Sauce:
Combine mayonnaise, ketchup, sweet pickle relish and Worcestershire sauce in a small bowl. Stir thoroughly until well incorporated and set aside to allow flavors to meld while you prepare the rest of the ingredients. This sauce can be made ahead and refrigerated for up to a week for even deeper flavor.
Caramelize the Onions:
Melt butter in a large skillet over medium heat until it begins to foam. Add your thinly sliced onions to the pan and cook them slowly, stirring occasionally for 15 to 20 minutes. Look for that gorgeous golden brown color and sweet aroma that signals perfect caramelization. Be patient here as rushing this step will rob you of incredible flavor.
Cook the Beef Patties:
Shape your ground beef into four equal thin patties making them slightly larger than your bread slices as they will shrink during cooking. Season generously with salt and pepper on both sides. Cook in the same skillet you used for onions over medium high heat for 3 to 4 minutes per side until they develop a nice crust but remain juicy inside.
Assemble and Grill:
Butter one side of each bread slice this is crucial for that perfect golden crunch. Place four slices butter side down on your skillet or griddle. Layer each with Swiss cheese, a beef patty, caramelized onions, and cheddar cheese before topping with the remaining bread slices butter side up. Press gently with a spatula to help the melts hold together while cooking.
Achieve Melty Perfection:
Cook for about 2 to 3 minutes per side until the bread turns a beautiful golden brown and the cheese melts completely. Apply gentle but consistent pressure with your spatula to ensure even browning and melting. Allow to rest for one minute before cutting to let the cheese set slightly.
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A burger with cheese and bacon. | recipesim.com

I discovered the perfect ratio for the secret sauce after multiple attempts to recreate my favorite diner's version. The combination of sweet pickle relish with Worcestershire sauce might sound unusual, but trust me, it creates that indefinable quality that makes people ask what your secret is.

Make Ahead Options

The beauty of this recipe lies in its components that can be prepared ahead of time. The secret sauce actually improves with a day or two in the refrigerator as the flavors marry. You can also caramelize the onions and shape the patties up to two days in advance, storing them separately in airtight containers. When you're ready to eat, simply cook the patties and assemble your melts for a gourmet dinner in minutes.

Smart Substitutions

While traditional patty melts call for rye bread, sourdough makes an excellent alternative with its tangy flavor and sturdy texture. For those avoiding red meat, ground turkey or chicken works beautifully when seasoned well with a touch of garlic powder and Worcestershire sauce. Plant based burger patties have come a long way and make a convincing vegetarian option. For a dairy free version, several brands now offer plant based cheeses that melt surprisingly well.

The Perfect Bite

Achieving the ideal patty melt experience comes down to temperature and timing. Serve these sandwiches immediately after cooking when the contrast between the crispy exterior and melty interior is at its peak. A diagonal cut creates the perfect surface area for dipping into extra secret sauce. The classic accompaniments of dill pickle spears and crispy fries complete the experience, but a light side salad with vinaigrette dressing provides a refreshing contrast to the richness of the sandwich.

Cultural Context

The patty melt has deep roots in American diner culture, originating in California during the late 1940s as a hybrid between a hamburger and a grilled cheese sandwich. Unlike the traditional hamburger served on a bun, the patty melt embraced the practicality of a sandwich while elevating it with caramelized onions and multiple cheeses. This recipe honors that tradition while adding the modern touch of a versatile secret sauce that transforms it from good to memorable.

A close up of a grilled cheese sandwich. Pin it
A close up of a grilled cheese sandwich. | recipesim.com

Frequently Asked Questions

→ What type of bread works best for patty melts?

Rye bread is the traditional choice due to its hearty flavor and texture, but sourdough or whole wheat bread can also work well.

→ Can I use a different type of cheese?

Yes, you can substitute Swiss and cheddar with other cheeses like pepper jack, Provolone, or Gouda for a unique flavor twist.

→ How can I caramelize onions perfectly?

Cook onions slowly over medium heat with a bit of butter or oil, stirring occasionally, until golden brown, which takes 15-20 minutes.

→ Can I make this dish vegetarian?

You can use plant-based burger patties and dairy-free cheeses to create a vegetarian version of patty melts.

→ What can I serve with patty melts?

Pair patty melts with crispy fries, sweet potato fries, coleslaw, or a fresh salad for a balanced and satisfying meal.

Patty Melts with Secret Sauce

Delicious patty melts with melty cheese, flavorful onions, and a tangy secret sauce.

Prep Time
15 Minutes
Cook Time
25 Minutes
Total Time
40 Minutes

Category: Main Dishes

Difficulty: Intermediate

Cuisine: American

Yield: 4 Servings (4 patty melts)

Dietary: ~

Ingredients

→ Main Ingredients

01 1 lb ground beef
02 1 large onion, thinly sliced
03 8 slices rye bread
04 4 slices Swiss cheese
05 4 slices cheddar cheese
06 Butter, for grilling
07 Salt and pepper, to taste

→ Secret Sauce

08 1/2 cup mayonnaise
09 2 tablespoons ketchup
10 1 tablespoon sweet pickle relish
11 1 teaspoon Worcestershire sauce

Instructions

Step 01

In a small bowl, mix mayonnaise, ketchup, sweet pickle relish, and Worcestershire sauce. Set aside.

Step 02

In a large skillet, melt 1 tablespoon of butter over medium heat. Add sliced onions and cook, stirring occasionally, until caramelized, about 15-20 minutes. Remove and set aside.

Step 03

Divide ground beef into 4 equal portions and shape them into thin patties. Season both sides with salt and pepper.

Step 04

In the same skillet, cook patties over medium-high heat until cooked through, about 3-4 minutes per side. Remove from skillet and set aside.

Step 05

Butter one side of each slice of rye bread. Place 4 slices, butter-side down, on a clean skillet or griddle over medium heat.

Step 06

On each bread slice, place a slice of Swiss cheese, a cooked patty, caramelized onions, a slice of cheddar cheese, and another slice of bread, butter-side up.

Step 07

Cook assembled sandwiches until bread is golden brown and cheese is melted, about 2-3 minutes per side.

Step 08

Remove from the skillet and let rest for a minute before slicing in half. Serve immediately with the secret sauce on the side or drizzled on top.

Notes

  1. For a lighter version, use ground turkey or chicken instead of beef. Substitute plant-based patties for vegetarian options. Experiment with different cheeses, like pepper jack, for variety.

Tools You'll Need

  • Large skillet
  • Mixing bowl
  • Spatula
  • Griddle or additional skillet
  • Knife

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy (cheese, mayonnaise)
  • Contains gluten (rye bread)
  • Contains eggs (mayonnaise)
  • Contains soy (Worcestershire sauce may contain soy)
  • Contains pickles (pickle relish)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 680
  • Total Fat: 45 g
  • Total Carbohydrate: 45 g
  • Protein: 28 g