Start by cutting the tops and bottoms off the sweet onions, then slice them into quarters without cutting all the way through, leaving them intact at the bottom.

Soak the onions in buttermilk for at least 10 minutes to enhance tenderness and flavor.

In a mixing bowl, whisk together flour, paprika, garlic powder, onion powder, cayenne pepper, salt, and pepper until well combined.

Remove one onion from the buttermilk, allowing excess to drip off. Dip it into the seasoned flour mixture, coating every exposed part. Repeat with the second onion.

Preheat your air fryer to 400°F (200°C).

Lightly spray the air fryer basket with cooking spray. Place both coated onions in the basket, ensuring they’re not crowded. Spray the tops lightly with additional cooking oil.

Air fry the onions for 12-15 minutes, flipping them halfway through, until golden brown and crispy.

Check for doneness; if needed, air fry for an extra couple of minutes.