Crispy Onion Strings

There’s something about crispy onions that makes almost any meal better. I tried these Air Fryer Crispy Onion Strings last weekend, and honestly, I wasn’t expecting them to disappear so quickly!

I had two large sweet onions sitting in the kitchen and wanted to make something crunchy without deep-frying. I sliced them thin, tossed them with a simple seasoned coating, and let the air fryer do the work.

The first batch came out golden, crispy, and incredibly fragrant. My family kept grabbing them straight from the plate, and before I knew it, there were barely any left. Now I make these whenever I’m craving something crunchy but want to skip the deep fryer.

They’re delicious on burgers, salads, sandwiches, soups, or simply enjoyed as a snack.

Why You’ll Love Them

• Crispy and golden
• Much less oil than deep-frying
• Easy air fryer recipe
• Sweet and savory
• Great topping for burgers and salads
• Ready in about 20 minutes

Ingredients

• 2 large yellow or sweet onions
• 1 tablespoon olive oil
• ½ cup all-purpose flour
• 2 tablespoons cornstarch
• 1 teaspoon paprika
• ½ teaspoon garlic powder
• ½ teaspoon onion powder
• ½ teaspoon black pepper
• ½ teaspoon salt
• ¼ teaspoon cayenne pepper, optional
• Cooking spray, as needed

Instructions

1. Slice the Onions

Peel the onions and slice them into very thin rings.

Separate the rings with your fingers.

Pat them dry with paper towels. Removing excess moisture helps them crisp up.

2. Make the Seasoned Coating

In a bowl, combine the flour, cornstarch, paprika, garlic powder, onion powder, black pepper, salt, and cayenne if using.

Toss the onion rings in the mixture until lightly coated.

Shake off any excess coating.

3. Add the Oil

Drizzle the onions with the olive oil and gently toss until the coating is lightly moistened.

Don’t add too much oil—the air fryer needs only a small amount to create crisp edges.

4. Air Fry

Preheat the air fryer to 375°F (190°C).

Arrange the onions in a relatively loose layer in the basket. Work in batches if necessary.

Lightly spray the tops with cooking spray.

Air fry for 8–12 minutes, shaking the basket every 3–4 minutes.

Watch them closely toward the end because thin onions can go from golden to burnt quickly.

5. Cool & Crisp

Transfer the onions to a plate lined with paper towels.

Let them sit for a few minutes. They’ll become even crispier as they cool.

My Tips for Extra-Crispy Onion Strings

Slice them very thin.
Thin slices give you those delicate, crunchy edges.

Don’t overcrowd the basket.
Too many onions at once will steam instead of crisp.

Shake frequently.
This helps the onions cook evenly.

Watch the final few minutes.
Onions brown quickly once they get close to being done.

Let them cool.
They continue crisping as they cool.

Diabetes-Conscious Option

The traditional flour coating adds carbohydrates, so for a lower-carbohydrate version, use a smaller amount of coating or substitute with a low-carb flour blend that works for your dietary needs.

Keep the portion moderate and pair the crispy onions with protein and non-starchy vegetables.

Mediterranean-Inspired Serving Ideas

These crispy onions are delicious over:

• Greek salad
• Grilled chicken
• Mediterranean bowls
• Roasted vegetables
• Baked fish
• Turkey burgers
• Lentil bowls
• Hummus and vegetables

A little lemon zest and dried oregano in the seasoning also gives them a lovely Mediterranean touch.

Prep Time

10 minutes

Cook Time

8–12 minutes per batch

Total Time

About 20 minutes

Servings

6

Nutrition Facts

Approximate per serving:

• Calories: 105
• Protein: 2g
• Carbohydrates: 17g
• Fat: 3g
• Fiber: 1g
• Sugar: 4g
• Sodium: 200mg

Nutrition will vary depending on the coating and amount of oil used.

Frequently Asked Questions

Can I use red onions?

Yes! Red onions work well and give the finished crispy onions a slightly stronger flavor.

Why aren’t my onions crispy?

The most common reasons are overcrowding, thick slices, or too much moisture. Cook in batches and shake the basket regularly.

Can I make these without flour?

Yes. You can experiment with cornstarch alone or a low-carb coating, although the texture will be slightly different.

Can I make them ahead?

Yes. Let them cool completely before storing them in an airtight container. Re-crisp them in the air fryer for a few minutes before serving.

What can I put crispy onions on?

They’re fantastic on burgers, salads, grilled chicken, baked potatoes, soups, casseroles, and sandwiches.

Can I freeze them?

I recommend making them fresh for the best texture. Freezing can make them lose some of their delicate crispness.