01 -
Remove the stems from the onions, peel, and slice into 1.5-inch-thick rings. Separate into individual rings and soak in ice water.
02 -
Preheat your fire to medium-high (375-400°F). Heat 2-3 inches of oil in a deep cast iron skillet or Dutch oven to 375°F.
03 -
Combine 1.5 cups flour, cornstarch, kosher salt, garlic powder, black pepper, and cayenne in a bowl. Gradually mix in the beer until smooth, like pancake batter consistency. Place remaining flour in a separate bowl.
04 -
Drain and pat dry the onion rings. Coat each ring in flour, then in beer batter, ensuring even coverage.
05 -
Add battered onion rings to hot oil and fry for 2 minutes per side or until golden brown. Work in small batches to avoid overcrowding. Place cooked rings on a wire rack with paper towels underneath.
06 -
Reheat fire to medium-high. Cook bacon in a cast iron skillet until desired crispness. Remove and set aside.
07 -
Form ground beef into loose 2 oz balls and chill until ready to cook.
08 -
Place burger balls on a hot skillet, season with salt, pepper, and garlic powder. Sear for 30 seconds, then smash flat with parchment and a spatula. Cook 1-2 minutes until crisp, then flip and season other side. Add cheese and cook another 1-2 minutes until melted. Stack two patties to make double patties.
09 -
Spread mayonnaise on the bottom bun. Add double patty, bacon, onion rings, BBQ sauce, and the top bun. Serve immediately.