1-Getting started with this Onion Wrapped Flying Dutchman: Begin by preparing the sauce: combine 1/2 cup mayonnaise, 1/4 cup ketchup, 1 Tablespoon yellow mustard, 2 Tablespoons minced onion, 2 Tablespoons pickle relish, and optional 1 Tablespoon Worcestershire sauce in a bowl; mix well and set aside for flavors to meld.

2-Next: divide 1.5 pounds ground beef into 4-8 loosely packed balls. Heat 1 Tablespoon cooking oil in a skillet over medium-high heat, then caramelize the 2 large onions sliced into 1/2-inch rings on both sides, seasoning with salt and pepper; remove once golden and tender. In the same pan, smash the beef balls into patties and cook for 2-3 minutes per side, adding salt and pepper as they cook, then top with 4-8 slices of cheese to melt.

3-Assemble your burger by placing 1-2 patties on one onion slice, add the homemade sauce, and top with another onion slice. For a lighter touch, wrap in lettuce or serve with optional pepperoncini. The total preparation time is about 50 minutes, with 30 minutes for prep and 15 for cooking, making it ideal for quick weeknight dinners.

4-Detailed Assembly Tips: To keep things simple, handle the onions gently to maintain their shape as buns. This method ensures the burger holds together while adding moisture and flavor. For food enthusiasts, this step-by-step approach highlights how easy it is to adapt to your kitchen setup, even without an oven.