Air Fryer Blooming Onion

Introduction

Ever wonder how to make that restaurant-style blooming onion at home—without all the deep-fried guilt? Say hello to the Air Fryer Blooming Onion: the crispy, golden, pull-apart appetizer you love, made healthier and easier with your trusty air fryer. This version delivers crunch without the mess, and a zesty dipping sauce that seals the deal.

Perfect for game day, parties, or a fun snack night, this recipe is a crowd-pleaser that’s lighter, faster, and just as satisfying as the original.

Ingredients List

For the Blooming Onion:

1 large sweet onion (like Vidalia)
2 eggs
1/2 cup buttermilk
1 cup all-purpose flour
1/2 cup cornstarch
1 tsp smoked paprika
1 tsp garlic powder
1/2 tsp onion powder
1/2 tsp cayenne pepper (optional)
Salt and pepper to taste
Olive oil spray

For the Dipping Sauce:

1/2 cup mayonnaise
2 tbsp ketchup
1 tbsp prepared horseradish
1/2 tsp paprika
1/4 tsp garlic powder
1/4 tsp salt
Dash of cayenne pepper

Substitutions:

Swap buttermilk with dairy-free milk + 1 tsp vinegar.
Use gluten-free flour for a GF version.
Adjust cayenne for desired spice level.

Timing

Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes

Instructions

Step 1: Prep the onion

Cut off the top (pointy end) of the onion and peel. Place root side down and make 12–16 vertical cuts, being careful not to cut all the way through. Gently separate the layers.

Step 2: Soak and coat

In a bowl, whisk eggs and buttermilk. In another bowl, combine flour, cornstarch, and seasonings. Dip the onion into the egg mixture, then dredge in flour mix. Repeat for an extra crispy coating.

Step 3: Air fry

Preheat the air fryer to 375°F. Spray the onion generously with olive oil spray. Place cut-side up in the air fryer basket. Cook for 20–25 minutes until golden and crispy.

Step 4: Make the sauce

While the onion cooks, mix all dipping sauce ingredients in a bowl. Chill until ready to serve.

Step 5: Serve

Carefully remove onion and serve hot with dipping sauce.

Nutritional Information (Per Serving)

Nutrient	Amount
Calories	290
Fat	15g
Carbs	32g
Protein	6g
Fiber	3g
Sodium	430mg

Healthier Alternatives

Bake instead of air fry (though slightly less crispy).
Use Greek yogurt in place of mayo for the dipping sauce.
Try whole wheat flour or almond flour for added nutrition.

Serving Suggestions

Great with burgers or grilled meats.
Slice into petals and use as a topping for salads or wraps.
Serve on a platter with assorted dips for variety.

Common Mistakes to Avoid

Cutting too deep: The onion will fall apart. Keep the root intact.
Underspraying oil: A good mist ensures browning and crispness.
Overcrowding the fryer: Cook one onion at a time for even airflow.

Storing Tips

Refrigerate: Store leftovers in an airtight container for up to 3 days.
Reheat: Re-crisp in the air fryer at 375°F for 5–7 minutes.
Freeze: Not ideal—texture changes significantly.

Conclusion

The Air Fryer Blooming Onion brings all the flavor and crunch of your favorite restaurant appetizer—without the deep-frying fuss. Quick, crispy, and endlessly dippable, it’s a guaranteed hit every time.