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crispy air fryer blooming onion on a wood cutting board.
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4.66 from 75 votes

Air Fryer Blooming Onion Recipe

This Air Fryer Blooming Onion Recipe is so delicious! It is golden brown and crispy without all the extra work and mess of deep-frying it. You are sure to love this air fried appetizer.
Prep Time20 mins
Cook Time25 mins
Course: Appetizer
Cuisine: American, casual

Ingredients

blooming onion

  • 1 large sweet onion
  • 2 ½ cups all-purpose flour
  • 1 tablespoon paprika
  • 1 teaspoon cayenne pepper
  • ½ teaspoon ground cumin`
  • ½ teaspoon dried thyme
  • ½ teaspoon dried oregano
  • 2 large eggs
  • 1 cup milk
  • Salt and pepper to taste
  • Oil for frying

Sauce

  • ¼ cup mayonnaise
  • ¼ cup sour cream
  • 2 teaspoons ketchup
  • 1 tablespoon horseradish
  • ¼ teaspoon paprika
  • ¼ teaspoon salt
  • teaspoon garlic powder
  • teaspoon dried oregano
  • Black pepper to taste
  • Cayenne pepper to taste

Instructions

blooming onion sauce

  • Combine all the sauce ingredients into a bowl, then cover and place into the refrigerator.

blooming onion

  • Slice the onion to make it bloom. Start by cutting off 1/2 inch from the top of the onion, then peel the outer skin from the onion.
  • Place the onion cut-side down. Starting about 1/2 inch from the root, make a downward cut all the way through to the cutting board. Repeat to make four evenly spaced cuts around the onion.
  • Turn the onion over and set aside for 5 minutes to allow the petals to relax. Prior to breading, use your fingers to gently separate the outer pieces.
  • Make 3 additional cuts between each section until you have 16 evenly spaced cuts.
  • Whisk the flour, paprika, cayenne, cumin, thyme, and oregano in a large bowl. In a medium deep bowl, whisk the eggs, milk, and 1 cup water.
  • Place the onion in a clean bowl, cut-side up, and pour the flour mixture on top. Using a large spoon to coat the onion with the flour mixture, especially between the onion petals. Turn the onion over and pat off the excess flour. Reserve the bowl of flour.
  • Transfer the onion into the egg mixture and coat evenly. Remove and let the excess drip off, then transfer back into the reserved flour mixture and repeat the flouring process.
  • Place the onion into the refrigerator.
  • Preheat the air fryer for 10 minutes to 350ºF.
  • Remove the onion from the refrigerator and spray generously with cooking oil (vegetable or olive).
  • After making a sling from a sheet of aluminum foil, transfer the onion cut side up into the fryer basket.
  • Set the timer for 25 minutes and cook. Spray the onion with the cooking oil 2-3 times as you cook it fully.
  • Remove onion using the aluminum foil sling and season with salt and pepper.
  • Serve with the dip.
  • Enjoy!