Preparation:

Step 1: Prepare the Special Sauce

1. In a small mixing bowl, combine the mayonnaise, ketchup, mustard, pickle relish, and garlic powder.
2. Add salt and black pepper to taste.
3. Stir until smooth and creamy, then set the sauce aside for assembly.

Step 2: Cook the Onion Rings

1. If using store-bought onion rings, bake or fry them according to package instructions.
2. For homemade onion rings:
   • Dip onion slices into batter (a mix of flour, egg, and breadcrumbs).
   • Fry them in hot oil until golden and crispy, then drain on paper towels.

Step 3: Form and Season the Patties

1. Divide the ground beef into 4 equal portions.
2. Shape each portion into a thin, round patty, slightly larger than the buns (to account for shrinkage during cooking).
3. Season both sides of the patties generously with salt and black pepper.

Step 4: Cook the Patties

1. Heat a large skillet or griddle over medium-high heat.
2. Place the patties on the hot skillet and cook for 2–3 minutes per side until browned and cooked through.
3. During the last minute of cooking, place a slice of cheddar cheese on top of each patty and cover with a lid to allow the cheese to melt perfectly.

Step 5: Toast the Buns

1. Lightly butter the cut sides of the sesame seed buns.
2. Toast the buns on a skillet or grill until golden and slightly crispy.

Step 6: Assemble the Cheeseburgers

1. Spread a generous layer of the special sauce on the bottom half of each bun.
2. Add a handful of shredded lettuce, followed by a slice of tomato.
3. Place one cheesy beef patty on top of the vegetables.
4. Add an onion ring on top of the patty for extra crunch and flavor.
5. Drizzle additional special sauce if desired.
6. Finish by placing the top bun over the stack.