
Soak onion rings in buttermilk for 15 minutes.
Mix flour with paprika, garlic powder, salt, and pepper. Place panko in a separate bowl.
Dredge rings in flour, back into buttermilk, then into panko. Press coating firmly.
Spray all sides with cooking spray.
Air fry at 400°F for 8-10 minutes, flipping halfway, until deeply golden. Serve with ranch, BBQ sauce, or ketchup.
Tip: Sweet onions like Vidalia work best — they're milder and sweeter when cooked. The double dip (flour → buttermilk → panko) creates a thick, crunchy coating. Separate the rings before battering so you get individual, perfectly coated rings.
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