01 -
Peel the yellow onion and slice it into four 1/2-inch rounds. Drizzle each round with olive oil, Worcestershire sauce, Creole seasoning, and brown sugar. Slowly caramelize the onion slices in a skillet over medium-low heat for about 10 minutes per side until deeply browned and tender.
02 -
Season the ground beef with Creole seasoning in a mixing bowl. Divide evenly into four portions, roll into balls, then flatten each into a thin patty.
03 -
Heat a large skillet over medium-high heat. Sear burger patties for 2–3 minutes per side, until well-browned and cooked through.
04 -
Place one slice of American cheese on each patty during the final minute of cooking. Allow cheese to melt fully before removing from the pan.
05 -
In a bowl, whisk together mayonnaise, relish, Dijon mustard, Worcestershire sauce, sugar, garlic powder, onion powder, smoked paprika, Creole seasoning, and cayenne pepper until the sauce is creamy and smooth.
06 -
Arrange a caramelized onion slice as the base, top with a cheesy patty, spoon sauce over, and cover with another caramelized onion slice as the top bun. Repeat for the remaining servings.
07 -
Present immediately with additional sauce on the side for dipping.