Air Fryer Blooming Onion
A crispy, golden blooming onion made in the air fryer — no deep frying needed! Whole wheat flour and bold spices deliver incredible crunch in just 25 minutes.
Ingredients
Onion
- 1 large sweet onion choose the largest one available
Seasoned Flour Coating
- 1 cup whole wheat flour
- 1 tbsp smoked paprika
- 1 tsp garlic powder
- 1/2 tsp cayenne pepper optional, for heat
- 1/2 tsp dried thyme rub between fingers to release oils
- 1/2 tsp dried oregano
- sea salt and black pepper to taste, for finishing
Egg Wash
- 2 large eggs
- 1 cup unsweetened almond milk
For Air Frying
- olive oil or avocado oil in a spray bottle, as needed
Instructions
- Slice about half an inch off the stem end of the onion to create a flat surface. Leave the root end completely intact — this holds the petals together. Peel away all the papery outer skin.
- Place the onion cut-side down with the root pointing up. Starting half an inch from the root, make a firm downward cut to the board. Rotate and repeat to divide the onion into 4 quarters. Make 2–3 additional cuts within each quarter for roughly 16 petal sections. Do not cut through the root.
- Flip the onion over so it rests on its root. Let it sit for 5 minutes to allow the petals to naturally fan out. Gently pry the petals apart with your fingers.
- In a wide shallow bowl, whisk together the whole wheat flour, smoked paprika, garlic powder, cayenne pepper, thyme, and oregano until evenly blended. In a second bowl, vigorously whisk the eggs and almond milk until combined.
- Place the onion cut-side up in a large mixing bowl. Spoon the seasoned flour mixture generously over the entire onion, working it into every crevice. Pick up the onion and tap off any excess flour.
- Lower the floured onion into the egg wash, coating all petals thoroughly. Lift it out and let the excess liquid drip away. Return the onion to the seasoned flour bowl for a second coating. Shake off excess flour.
- Place the breaded onion in the refrigerator and chill for 10 minutes. This allows the coating to hydrate and bond so it stays crispy during cooking.
- Preheat your air fryer to 350°F (175°C) for at least 3 minutes. Fold a long piece of aluminum foil into a sturdy sling for easy handling.
- Remove the onion from the fridge. Generously spray the entire onion — including deep inside the petals — with olive oil or avocado oil spray.
- Lower the onion cut-side up into the air fryer basket using the foil sling. Cook for 25 minutes, spraying any dry white flour spots with oil 2–3 times during cooking. The onion is done when it is deeply golden and crispy all over.
- Carefully lift the onion out using the foil sling and transfer to a serving platter. Season with sea salt and freshly ground black pepper. Serve immediately with spicy mayonnaise, tangy barbecue sauce, or garlic yogurt.
Notes
Always keep the root end intact — it is the anchor that holds all the petals together during cutting and cooking.
Do not skip the 10-minute chilling step. It is the key to a crust that stays on and crisps up properly.
Spray the onion with oil generously and repeatedly during air frying. This is the secret to achieving that deep, golden crunch without any deep frying.
Leftovers can be stored in an airtight container in the refrigerator for up to 2 days. Reheat in the air fryer at 350°F for a few minutes to restore crispiness. Avoid the microwave — it will make the crust soggy.