Crispy Vegan Air Fryer Blooming Onion

ByHannah Peterson

Golden, crispy, pull-apart petals loaded with bold spices — this Vegan Blooming Onion is the ultimate crowd-pleasing appetizer or side dish!

Why You’ll Love This Vegan Blooming Onion

  • Crispy outside, tender inside with perfect “bloom” petals.
  • Air fryer magic — way less oil, ready in under 30 minutes.
  • Boldly seasoned and customizable.
  • Impressive presentation with minimal effort.
  • Naturally vegan and easily gluten-free.

Vegan Air Fryer Blooming Onion Recipe

(Serves 2–4 as appetizer)

Ingredients:

  • 1 large sweet or yellow onion (or 1 large russet potato for the blooming potato version)
  • ½ cup (60g) all-purpose flour or gluten-free flour blend
  • ½ cup (60g) cornstarch or arrowroot powder
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • 1 tsp smoked paprika
  • 1 tsp chili powder or cayenne (adjust for heat)
  • ½ tsp dried oregano or Italian seasoning
  • ½ tsp salt
  • ¼ tsp black pepper
  • ¾–1 cup (180–240ml) unsweetened plant milk (oat or almond works great)
  • Cooking spray or a brush of olive oil

For Serving (optional):

  • Vegan ranch, garlic aioli, or spicy ketchup
  • Fresh parsley or chives for garnish

Instructions:

  1. Prep the bloom: Cut off the top ½ inch of the onion (keep root end intact). Peel the outer skin. Place cut-side down and make 12–16 vertical cuts around the onion, stopping about ½ inch from the root so it stays together. Gently separate the petals with your fingers to open the “bloom.” (Same technique works beautifully with a large potato!)
  2. Make the batter: In a large bowl, whisk together flour, cornstarch, and all the spices. Gradually whisk in plant milk until you get a smooth, slightly thick batter (like pancake batter).
  3. Coat the onion: Dip the entire bloomed onion into the batter, using a spoon or your hands to get the mixture between all the layers. Let excess drip off. For extra crispiness, you can do a quick second light dusting of dry seasoned flour after the wet batter.
  4. Air Fry: Preheat air fryer to 375°F (190°C). Spray the basket and the onion generously with cooking spray. Place the onion bloom-side up in the basket. Air fry for 18–25 minutes, spraying with more oil halfway through, until deep golden and crispy. (For blooming potato, it may take 22–28 minutes depending on size.)
  5. Serve immediately: Sprinkle with a little extra salt and fresh herbs. Pull apart the petals and dip away!

Oven Alternative: Bake at 425°F (220°C) on a lined baking sheet for 30–40 minutes, flipping halfway and spraying with oil.

Storage: Best fresh, but leftovers can be refrigerated for 1–2 days. Re-crisp in the air fryer at 350°F for 5–7 minutes.

This Vegan Air Fryer Blooming Onion is guaranteed to steal the show at your next gathering or game night. Your photos show exactly how stunning and fun the process and final result are!

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