Three shallow bowls - or plates for breading station
Sharp knife
Cutting board
Tongs
Wire cooling rack
Measuring cups and spoons
Paper towels
Ingredients
2sweet onions - about 1 lb or 450g total, Vidalia or yellow work well
1cupall-purpose flour - 125g
2large eggs
2tablespoonsmilk - 30ml
1.5cupspanko breadcrumbs - 90g
1teaspoongarlic powder
1teaspoonpaprika
0.5teaspooncayenne pepper - optional, for heat
1teaspoonsalt - divided, plus extra for finishing
0.5teaspoonblack pepper - divided
cooking spray - avocado or olive oil spray works best
sea salt - for finishing (optional)
Instructions
Peel onions and cut crosswise into 1/2-inch thick slices. Separate into individual rings and pat thoroughly dry with paper towels. Let rings sit at room temperature for 10 minutes to remove excess moisture.
In first bowl, combine flour with half the salt and pepper. In second bowl, whisk eggs and milk until smooth. In third bowl, mix panko with garlic powder, paprika, cayenne, and remaining salt and pepper.
Coat each onion ring in flour, shaking off excess. Dip in egg wash, then press into panko mixture, ensuring even coverage. Place breaded rings on a plate and rest for 5 minutes to help coating set.
Preheat air fryer to 375°F (190°C) for 3-4 minutes. Lightly spray the air fryer basket with cooking spray.
Arrange onion rings in a single layer in the basket, leaving space between each. Spray tops lightly with cooking spray. Air fry for 6 minutes, then flip carefully with tongs. Spray again and cook for another 5-6 minutes until golden brown and crispy. Transfer to a wire rack and repeat with remaining rings.
Sprinkle hot rings with sea salt if desired. Serve immediately for maximum crispiness with your favorite dipping sauces.
Notes
Choose the right onions: Sweet onions like Vidalia or Walla Walla have a milder flavor that won't overpower the breading.
Don't skip the resting time: Letting breaded rings sit for 5 minutes before cooking helps the coating adhere better during air frying.
Avoid overcrowding: Rings need air circulation on all sides to crisp properly. Cook in batches for best results.
Pat onions very dry: Any excess moisture prevents breading from sticking and creates steam instead of crispiness.
Storage: Cool completely, then store in an airtight container with paper towels between layers. Refrigerate for up to 3 days.
Reheating: Best reheated in air fryer at 350°F (175°C) for 3-4 minutes. Avoid microwaving, which makes them soggy.
Freezing instructions: Freeze unbaked breaded rings on a baking sheet until solid, then transfer to freezer bags. Cook frozen directly, adding 2-3 minutes to cooking time.
Spicy variation: Add 2 teaspoons Cajun seasoning and 1/2 teaspoon hot sauce to the egg wash for Louisiana-style heat.
Parmesan herb version: Mix 1/2 cup grated Parmesan cheese and 1 tablespoon Italian seasoning into the panko for savory richness.
Gluten-free option: Substitute regular flour with gluten-free flour blend and use gluten-free panko or crushed cornflakes.