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Copycat Outback Bloomin' Onion in the Air Fryer with Spicy Bloom Sauce

Chef Marcus Stone By Chef Marcus Stone
• Published: Oct 09, 2026 • ★ 5.0 (670 ratings)
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Crispy golden air-fried blooming onion open like a flower on a board with a bowl of creamy pink-orange spicy bloom dipping sauce in the center
Prep Time
20 mins
Cook Time
18 mins
Total Time
38 mins
Servings
4 to 6 servings
Calories
240 kcal
Cuisine
American Steakhouse

There is perhaps no restaurant appetizer more famous or instantly recognizable across America than Outback Steakhouse's legendary Bloomin' Onion. With its massive flower of crispy, cayenne-seasoned petals dipped in that spicy, tangy horseradish sauce, it's virtually impossible to stop eating once it hits the table.

The only downside? The restaurant version is deep-fried in gallons of oil and packs over 1,900 calories. By using the air fryer and our pro-tested ice water blooming bath, you get the exact same shatteringly crisp texture, zesty steakhouse flavor, and iconic dipping sauce with 75% fewer calories and zero hot oil splatters!

The Secret Steps to a Perfect Air Fryer Bloomin' Onion

🥩 The Ultimate Outback Steakhouse Night at Home

Pair this legendary appetizer with our favorite steakhouse recipes:

Copycat Outback Bloomin' Onion in the Air Fryer with Spicy Bloom Sauce

★ 5.0 / 5 (670 reader reviews) Yield: 4 to 6 servings

Make Outback Steakhouse's iconic Bloomin' Onion right in your air fryer! Ultra-crispy seasoned petals with authentic spicy Bloom dipping sauce, without deep-fry oil.

🛒 Ingredients

👩‍🍳 Step-by-Step Instructions

  1. 1
    Cut 1/2 inch off the stem end of the onion. Peel off the papery outer skin, leaving the root base intact. Place onion cut-side down on a cutting board.
  2. 2
    Starting 1/2 inch from the root, make 4 cuts evenly spaced around the onion (like quarters). Make 3 additional cuts between each quarter until you have 16 even petals.
  3. 3
    Flip the onion over so petals face up. Submerge into a bowl of ice water for 15 minutes to help petals naturally blossom apart. Remove and pat thoroughly dry with paper towels.
  4. 4
    In a wide bowl, whisk together flour, cornstarch, paprika, cayenne, garlic powder, onion powder, oregano, salt, and black pepper. In a second bowl, whisk eggs and milk.
  5. 5
    Place the onion petal-side up in a large shallow dish. Sprinkle flour mixture generously between every single petal. Invert and tap gently to shake off excess.
  6. 6
    Pour the egg wash mixture evenly over and between all petals until completely moistened.
  7. 7
    Coat the onion a second time with the remaining flour mixture, ensuring every petal is covered in seasoning.
  8. 8
    Preheat air fryer to 375°F (190°C) for 3 minutes. Carefully place the breaded onion root-side down in the center of the air fryer basket.
  9. 9
    Liberally spray all petals with olive oil spray until no dry flour spots remain (this is key to maximum crunch!).
  10. 10
    Air fry at 375°F for 18 to 20 minutes until petals are deep golden-brown and crispy throughout. While cooking, whisk together all Bloom Sauce ingredients and chill in the fridge.
  11. 11
    Carefully lift the bloomin' onion out with two spatulas, place on a serving platter with the ramekin of spicy Bloom Sauce in the center, and serve immediately!
💡 Chef's Insider Tip: Check the onion at the 12-minute mark in the air fryer. If you see any white, chalky flour spots, give them another quick spritz of olive oil spray. Olive oil transforms dry flour into golden, crunchy perfection.

🥗 Nutrition Facts (Per Serving)

240
Calories
5g
Protein
32g
Carbs
11g
Fat
3g
Fiber

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💬 Kitchen FAQs & Tips

Frequently Asked Questions

Got questions about making Copycat Outback Bloomin' Onion in the Air Fryer with Spicy Bloom Sauce? Here are chef-tested answers, storage advice, and easy substitutions.

What kind of onion works best for a Bloomin' Onion?

A large colossal sweet onion (such as Vidalia, Walla Walla, or Maui) is best. Sweet onions caramelize beautifully and balance the spicy seasoned coating.

Why did my onion petals end up soft instead of crispy?

Soft petals happen if the onion wasn't patted dry after the ice bath, or if not enough cooking spray was applied to the flour coating. Make sure to spray thoroughly with oil!

Can I make this in a standard oven?

Yes, bake in an oven preheated to 425°F (220°C) for 25 to 30 minutes until golden and crisp.

Can the Bloom Sauce be made ahead?

Yes! In fact, the Bloom Sauce tastes even better if made 2 to 4 hours ahead and chilled, allowing the horseradish, garlic, and spices to marry together.

Chef Marcus Stone

Recipe Created by Chef Marcus Stone

Professional culinary chef and recipe developer with 12+ years of experience crafting foolproof family meals, comfort food classics, and healthy weeknight dinners.

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