Cut the top off the onion and peel the outer skin. Place the onion root side down and make vertical cuts from the top to the root, being careful not to cut all the way through. Turn the onion and repeat to create a blooming effect.

In a mixing bowl, combine flour, paprika, garlic powder, onion powder, salt, and pepper. In another bowl, mix the buttermilk and beaten egg.

Dip the onion in the buttermilk mixture, then coat it in the flour mixture. Repeat the process to ensure a thick coating.

Finally, coat the onion in panko breadcrumbs for extra crunch.

Preheat the air fryer to 375°F (190°C). Place the breaded onion in the air fryer basket and spray lightly with cooking oil.

Cook for 15 minutes, flipping halfway through, until golden brown and crispy.

In a small bowl, mix together mayonnaise, ketchup, Worcestershire sauce, hot sauce, and garlic powder. Adjust seasoning to taste.

Remove the onion from the air fryer and serve immediately with the dipping sauce.