Prepare the Big Mac Sauce:

• In a small bowl, combine mayonnaise, finely chopped pickles, yellow mustard, white vinegar, paprika, garlic powder, and onion powder. Mix until well combined.
• Season with salt and pepper to taste. Refrigerate the sauce for at least 30 minutes.

Prepare the Burger Patties:

• Divide the ground beef into 6 equal portions and shape them into thin patties.
• Season both sides of the patties with salt and pepper.
• Heat vegetable oil in a large skillet over medium-high heat and cook the patties for 2-3 minutes on each side, or until cooked through.

Toast the Buns:

• Slice the hamburger buns into three parts: top bun, middle bun (using the bottom of an extra bun), and bottom bun.
• Toast the buns lightly in a separate skillet or toaster.

Assemble the Big Mac:

• Spread a generous amount of Big Mac sauce on the bottom bun.
• Add a handful of shredded iceberg lettuce and some finely diced onions.
• Place one slice of American cheese and a cooked burger patty on top.
• Place the middle bun on top of the first layer.
• Repeat the process: spread Big Mac sauce, add lettuce, onions, and pickles, then place the second burger patty.
• Top with the remaining bun half.

Serve:

• Serve immediately while the burgers are hot.