01 - Peel onions and slice into thick 1/2-inch rings. Carefully separate rings and reserve only the largest, most intact rings for stuffing. Discard centers or save for another use.
02 - Arrange three shallow bowls: place flour in the first, beaten eggs in the second, and combine panko breadcrumbs, smoked paprika, garlic powder, salt, and pepper in the third bowl.
03 - Heat olive oil in a skillet over medium-high heat. Add ground beef, salt, pepper, and Worcestershire sauce. Break up meat and cook until thoroughly browned, about 5-7 minutes. Remove from heat and allow to cool for 5 minutes.
04 - Stir diced pickles, tomatoes, shredded cheddar, ketchup, and mustard into the cooled beef mixture until evenly combined.
05 - Carefully pack cheeseburger mixture into each onion ring, pressing gently to create a compact, stable filling. Ensure filling reaches the edges but doesn't overflow.
06 - Coat each stuffed ring in flour, shaking off excess. Dip into beaten eggs, then press firmly into seasoned panko mixture to coat all sides completely.
07 - Heat oil to 350°F in a deep fryer or heavy pot. Fry rings in batches of 3-4 for 2-3 minutes per side until deep golden brown and crispy. Transfer to paper towels to drain.
08 - Arrange hot onion ring rolls on a serving platter. Serve with burger sauce, ranch dressing, or spicy mayo for dipping.