01 - Peel onions and slice into thick ½-inch rings. Separate into individual rings and reserve the largest intact ones for stuffing.
02 - Arrange three shallow bowls: place flour in the first, beaten eggs in the second, and combine panko breadcrumbs with smoked paprika, garlic powder, salt, and pepper in the third.
03 - Heat olive oil in a skillet over medium heat. Add ground beef, salt, pepper, and Worcestershire sauce. Brown the meat for 5-7 minutes, breaking it apart as it cooks. Remove from heat and cool slightly.
04 - Stir diced pickles, tomatoes, shredded cheddar cheese, ketchup, and mustard into the cooled beef mixture until well combined.
05 - Fill each large onion ring with the cheeseburger mixture, pressing gently to create a compact, even filling that stays within the ring boundaries.
06 - Dredge each stuffed ring in flour, shaking off excess. Dip into beaten eggs, then press firmly into the seasoned panko mixture to coat thoroughly on all sides.
07 - Heat vegetable oil to 350°F in a deep fryer or heavy pot. Fry the stuffed rings in batches for 2-3 minutes per side until golden brown and crispy. Remove with a slotted spoon and drain on paper towels.
08 - Arrange hot onion ring rolls on a serving platter with your preferred burger sauce or dipping condiment on the side.