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Ultimate Secret Sauce Smashburgers

Crispy, lacy-edged beef patties smashed on a hot griddle, topped with melty American cheese, fresh veggies, and a tangy, savory secret sauce, all housed in a toasted potato bun.

Ultimate Secret Sauce Smashburgers
Prep 15 min Cook 10 min Total 25 min Level Intermediate
Serves 4

Ingredients

Secret Sauce

  • 0.5 cup Mayonnaise — Full fat preferred
  • 2 tablespoons Ketchup
  • 1 tablespoon Sweet pickle relish
  • 1 teaspoon Yellow mustard
  • 0.5 teaspoon White vinegar
  • 0.5 teaspoon Garlic powder
  • 0.5 teaspoon Onion powder
  • 0.25 teaspoon Paprika — Sweet or smoked

Smashburgers

  • 1 lb Ground beef (80/20) — Divided into 8 loose 2-ounce balls
  • 1 teaspoon Kosher salt — For seasoning
  • 0.5 teaspoon Black pepper — Freshly ground
  • 4 whole Potato buns — Sliced
  • 2 tablespoons Unsalted butter — Softened, for toasting buns
  • 4 slices American cheese — Or up to 8 slices if you prefer cheese on every patty
  • 1 cup Iceberg lettuce — Shredded
  • 4 slices Tomato — Thinly sliced
  • 0.25 cup White onion — Finely diced
  • 16 pieces Dill pickle chips — Hamburger dills

Instructions

  1. In a small bowl, whisk together all the Secret Sauce ingredients until well combined. Cover and refrigerate until ready to use. (Making this ahead allows the flavors to meld).

    ~5 min
    The sauce can be made up to a week in advance.
  2. Divide the ground beef into 8 equal portions (about 2 ounces each). Gently roll them into loose balls. Do not pack the meat tightly; keeping it loose helps create the jagged, crispy edges.

    ~5 min
    Keep the meat cold in the refrigerator until right before you cook.
  3. Butter the cut sides of the potato buns. Heat your cast-iron skillet or griddle over medium heat. Toast the buns until golden brown, about 1-2 minutes. Remove and set aside.

    ~2 min
  4. Increase the heat to medium-high or high until the skillet is smoking hot. Place 2 to 4 beef balls on the skillet (depending on size). Immediately place a square of parchment paper over a ball, and use your stiff spatula to press down firmly until the patty is very thin (about 1/4-inch thick). Repeat for the others in the pan. Discard the parchment paper.

    ~1 min
    Pressing early prevents juices from escaping. The parchment paper stops the meat from sticking to your spatula.
  5. Season the patties generously with kosher salt and black pepper. Let them cook undisturbed until the edges are deeply browned and crispy, and juices start bubbling through the top, about 2 minutes.

    ~2 min
  6. Use your stiff spatula to scrape firmly under the patty, making sure to keep the crispy crust attached. Flip the patties. Place a slice of American cheese on half of the patties. Cook for 1 more minute, then stack a bare patty on top of a cheese-covered patty.

    ~1 min
    American cheese is crucial here for its unparalleled melting qualities.
  7. Assemble the burgers: Spread a generous amount of secret sauce on the bottom bun. Top with shredded lettuce, a slice of tomato, pickles, and diced onion. Place the double patty stack on top. Spread a little more sauce on the top bun, and close the sandwich. Serve immediately.

    ~4 min
    Building the toppings on the bottom bun protects the bun from getting soggy from the meat juices.
Nutrition
720
Calories
32
Protein (g)
36
Carbs (g)
48
Fat (g)
16
Sat. Fat (g)
2
Fiber (g)
8
Sugar (g)
1150
Sodium (mg)
115
Cholesterol (mg)
Equipment
  • Cast-iron skillet or griddle
  • Heavy, stiff metal spatula
  • Parchment paper (cut into small squares)
  • Small mixing bowl
Tips & Storage
  • Ventilation is key! Smashing burgers on a hot cast iron will create a lot of smoke, so turn on your range hood or open a window.
  • Do not season the beef before forming the balls. Salt extracts moisture and cross-links proteins, which makes for a dense, sausage-like burger. Season only right after smashing.
  • For extra lacy edges, use a second spatula or a heavy tool (like a meat mallet) to press down on the main spatula while smashing.
  • Storage: Smashburgers are best enjoyed immediately. Leftover patties and buns should be stored separately in airtight containers in the refrigerator for up to 3 days. Reheat patties in a skillet over medium heat until warmed through.
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🤖 This recipe was created with AI assistance. If you spot a mistake or something that doesn't look right, please report it.