Homemade In-N-Out Style Hamburger

Instructions

1. 1

   Prepare the Special Spread: In a small bowl, whisk together the mayonnaise, ketchup, sweet pickle relish, white vinegar, granulated sugar, and onion powder until well combined. Set aside.

2. 2

   Prepare the vegetables: Wash and dry the lettuce. Slice the tomato and onion. For a true In-N-Out experience, you can dice a portion of the onion very finely for the 'grilled onion' effect if you choose to grill some later.

3. 3

   Form the patties: Divide the ground beef into 4 equal portions. Gently form each portion into a loose ball. Do not overwork the meat.

4. 4

   Cook the patties: Heat a large cast-iron skillet or griddle over medium-high heat until very hot. Add 1 tablespoon of vegetable oil. Place the beef balls on the hot surface and immediately smash each ball down with a sturdy spatula (using parchment paper on top can prevent sticking) into a thin, flat patty, about 1/4 to 1/2 inch thick and slightly wider than your bun. Season generously with salt and pepper.

5. 5

   Cook the patties for 2-3 minutes per side, or until a deep brown crust forms. If you want grilled onions, you can place some diced onions directly on top of the patties while they cook for the last minute or so. (If making cheeseburgers, add a slice of American cheese during the last minute of cooking and cover to melt).

6. 6

   Toast the buns: While the patties are cooking, lightly butter or lightly toast the cut sides of the hamburger buns on the same skillet or a separate pan until golden brown, about 1-2 minutes.

7. 7

   Assemble the hamburgers: On the bottom bun, spread a generous amount of the Special Spread. Layer with lettuce, tomato, and sliced (or grilled) onion. Place a cooked hamburger patty on top. Add another dollop of Special Spread to the top bun, then place it on top of the patty.

8. 8

   Serve immediately and enjoy your homemade In-N-Out style hamburger!