Air Fryer Crispy Onions are golden, crunchy, and packed with delicious savoury flavour. They’re easy to make with just a few simple ingredients and much less oil than traditional deep-fried onions. Sprinkle them over burgers, salads, casseroles, or soups for an irresistible crunchy topping, or enjoy them as a tasty snack!
What You Will Need?
You only need a handful of everyday ingredients to make crispy onions in the air fryer.
Ingredients
- 2 medium onions: Yellow or white onions work best because they have a balanced flavour and crisp up beautifully.
- 1–2 tablespoons olive oil: Helps the onion slices brown and become crispy.
- 2 tablespoons all-purpose flour: Creates a light coating that helps the onions develop a crunchy texture.
- ½ teaspoon garlic powder: Adds a savoury flavour.
- ½ teaspoon paprika: Gives the onions a little colour and warmth.
- ¼ teaspoon salt: Enhances the natural sweetness of the onions.
- ¼ teaspoon black pepper: Adds a subtle kick.
Optional Ingredients
- ½ teaspoon onion powder: For extra onion flavour.
- A pinch of cayenne pepper: If you like a little heat.
- Cornstarch: Replace half the flour with cornstarch for a lighter, crispier coating.
You can make crispy onions without flour if you prefer. Simply toss the sliced onions with a little oil and seasoning, although the texture may be slightly different.
How to Cut Onion for Making Crispy Onions in Air Fryer?
The way you cut your onions makes a big difference to how evenly they cook and how crispy they become.
Step 1: Peel the Onions
Remove the papery outer skin and trim off the ends. Rinse the onions if necessary, then pat them completely dry with a clean kitchen towel.
Step 2: Slice the Onions Thinly
Place the onion on a cutting board and cut it in half from top to bottom. Lay each half flat and slice it into thin, even strips.
Aim for slices approximately ⅛ inch (3 mm) thick. Thin slices cook faster and have a better chance of becoming crispy throughout.
If you prefer small crispy onion pieces for topping casseroles or salads, cut the slices into shorter lengths.
Step 3: Separate the Onion Strips
Gently separate the layers with your fingers so the onion strips do not stick together. This helps the oil and seasoning coat each piece evenly.
Helpful Cutting Tip
Try to keep all the slices roughly the same thickness. Very thin pieces can burn quickly, while thick pieces may remain soft in the centre. A sharp knife or mandoline slicer can help you achieve consistent slices.
If you use a mandoline, always use its safety guard to protect your fingers.
How to Prepare Air Fryer Crispy Onions?
Making crispy onions in the air fryer is simple, but the key is to cook them in small batches and check them frequently. Onions contain moisture and natural sugars, so they can go from golden to burnt quite quickly.
Step 1: Preheat the Air Fryer
Preheat your air fryer to 350°F (175°C) for approximately 3 minutes, if recommended for your model.
Preheating helps the onions start cooking evenly as soon as they enter the basket.
Step 2: Season the Onions
Place the thinly sliced onions in a large mixing bowl. Add the olive oil and toss until the slices are lightly coated.
In a separate small bowl, combine the flour, garlic powder, paprika, salt, and black pepper.
Sprinkle the seasoning mixture over the onions and toss thoroughly. Try to distribute the flour evenly without creating thick clumps.
If the onions look very wet, add a small amount of extra flour. Avoid adding too much, as a thick coating can become dry rather than crispy.
Step 3: Arrange the Onions in the Basket
Place the seasoned onions in the air fryer basket in a loose, even layer.
Avoid packing them tightly together. If you have several onions, cook them in batches to allow the hot air to circulate around the slices.
For the best results, use a perforated air fryer liner only if it is approved for your appliance and is secured by the food. Never preheat an air fryer with a loose liner inside.
Step 4: Air Fry the Onions
Air fry the onions at 350°F (175°C) for approximately 10–15 minutes, shaking the basket every 3–4 minutes to separate the slices and promote even browning.
Start checking them after about 7 minutes. Thin slices may cook faster, while thicker slices or crowded batches may need additional time.
If the onions brown too quickly, reduce the temperature to 320°F (160°C) and continue cooking until they reach your preferred texture.
The onions should look golden brown and feel drier as they cook. Remember that they may become slightly crispier as they cool.
Step 5: Cool and Serve
Carefully transfer the onions to a plate lined with paper towels or a wire rack. Spread them out rather than piling them together.
Allow them to cool for a few minutes before serving. Cooling helps the onions firm up and develop a crunchier texture.
Enjoy them immediately as a topping for your favourite dishes!
Important: Air fryer models vary, so use the cooking time as a guide. Check frequently towards the end of cooking because thin onions can burn in just a minute or two.
How to Use Fried Onions?
Air fryer crispy onions are incredibly versatile. Their crunchy texture and savoury flavour make them a delicious finishing touch for everyday meals.
Here are some easy ways to use them.
1. Top Burgers and Hot Dogs
Sprinkle crispy onions over burgers, hot dogs, or sandwiches for extra crunch. They pair especially well with melted cheese, barbecue sauce, and creamy mayonnaise.
2. Add Them to Salads
Use crispy onions as a crunchy alternative to croutons. They taste delicious on green salads, chopped vegetable salads, and chicken salads.
Add them just before serving to keep them from becoming soggy.
3. Sprinkle Over Soups
Crispy onions make a tasty topping for tomato soup, creamy mushroom soup, French onion soup, and vegetable soup.
Add them at the last moment so they retain their texture.
4. Use Them on Casseroles
Scatter crispy onions over green bean casserole, macaroni and cheese, or a creamy chicken casserole. They add a golden, crunchy layer that contrasts beautifully with soft fillings.
5. Add Them to Rice and Noodle Dishes
Sprinkle the onions over rice bowls, stir-fries, noodles, or grain salads. They bring a savoury crunch to otherwise soft dishes.
6. Top Baked Potatoes
Add crispy onions to baked potatoes, mashed potatoes, or loaded potato wedges. They work especially well with sour cream, cheese, chives, and bacon.
7. Use Them in Wraps and Sandwiches
Add a handful to wraps, grilled sandwiches, or chicken pitas for extra texture and flavour.
8. Serve as a Snack
Enjoy the onions on their own or alongside your favourite dipping sauce. You can season them with chilli powder, smoked paprika, or a little Parmesan for a different flavour.
Helpful Tips!
Follow these tips to make the best air fryer crispy onions every time.
1. Slice the Onions Thinly and Evenly
Consistent slices cook at roughly the same rate. If some pieces are much thicker than others, the thin ones may burn before the thicker ones become crisp.
2. Dry the Onions Before Seasoning
Excess moisture can make the onions steam rather than crisp. After peeling and slicing, pat them dry with a kitchen towel before adding oil and flour.
3. Don’t Use Too Much Oil
A light coating of oil helps the onions brown, but too much can make them greasy. Start with 1 tablespoon and add a little more only if necessary.
4. Avoid Overcrowding the Basket
This is one of the most important steps. When too many onions are packed together, moisture becomes trapped and the slices may cook unevenly.
Cook in small batches if necessary.
5. Shake the Basket Regularly
Shake the basket every 3–4 minutes to move the onions around. Separate any pieces that stick together so they brown more evenly.
6. Watch Them Closely Towards the End
Onions contain natural sugars that can brown quickly. Check frequently during the final minutes and remove any pieces that become golden before the rest.
7. Let the Onions Cool
The onions may feel slightly soft when they first come out of the air fryer. Allow them to cool in a single layer so excess moisture can escape and the texture can firm up.
8. Adjust the Seasonings
Try smoked paprika, curry powder, dried herbs, chilli flakes, or Parmesan for different flavours. Add delicate ingredients such as grated Parmesan near the end if they brown too quickly.
9. Store Them Only When Completely Cool
Warm onions release steam, which can soften the entire batch. Cool them fully before placing them in an airtight container.
10. Reheat to Restore Some Crunch
If stored onions lose their crispness, place them in the air fryer at 300–320°F (150–160°C) for 1–3 minutes. Check frequently to avoid burning.
FAQs
How long do crispy onions take in the air fryer?
Thinly sliced onions generally take around 10–15 minutes at 350°F (175°C). The exact time depends on the thickness of the slices, the quantity, and your air fryer. Start checking after 7 minutes.
What temperature is best for air fryer crispy onions?
A temperature of 350°F (175°C) is a good starting point. If the onions brown too quickly before they dry out, lower the temperature to 320°F (160°C) and continue cooking while checking frequently.
Why are my air fryer onions not crispy?
There are several possible reasons. The onions may be too thick, too wet, or overcrowded in the basket. Too much oil can also affect the texture.
For crispier results, dry the onions well, slice them evenly, use a light coating of oil, and cook them in small batches.
Can I make crispy onions without flour?
Yes. Toss thinly sliced onions with a small amount of oil and your favourite seasonings, then air fry them until golden and dry. They may have a slightly different texture, but they can still be delicious.
Which onions are best for crispy onions?
Yellow and white onions are excellent choices because they have a balanced flavour and brown well. Red onions also work, although their flavour is slightly different and their colour may change as they cook.
Do I need to soak the onions before air frying?
No. Soaking is not necessary for this recipe. In fact, extra moisture can make crisping more difficult. Slice the onions and pat them dry before adding the oil and seasoning.
Can I use frozen sliced onions?
Fresh onions are generally best because frozen onions release additional moisture as they thaw. If using frozen onions, thaw and drain them thoroughly, then pat them dry before seasoning. The final texture may be softer.
How do I keep crispy onions crunchy?
Let the onions cool completely in a single layer before storing them in an airtight container. Keep them away from moisture and avoid adding them to wet dishes until just before serving.
How should I store leftover air fryer crispy onions?
Once completely cool, store the onions in an airtight container in a cool, dry place for short-term use. Their shelf life depends on how thoroughly they were dried and the storage conditions. If they retain moisture or become soft, refrigerate them and use them within 3–4 days, reheating before serving. Discard any onions that develop an unusual smell, visible mould, or other signs of spoilage.
Can I make crispy onions ahead of time?
Yes. You can prepare them a few hours before serving, then store them in an airtight container once completely cool. For the best crunch, add them to your dish just before serving.
Can I reheat crispy onions in the air fryer?
Yes. Reheat them at 300–320°F (150–160°C) for 1–3 minutes, checking frequently. This can help restore some crunch, but onions that have absorbed a lot of moisture may not become completely crisp again.
Are air fryer crispy onions healthier than deep-fried onions?
Air frying generally requires less added oil than deep frying, so it can reduce the amount of oil used. The overall nutritional value still depends on the ingredients, portion size, and amount of oil added.
Air Fryer Crispy Onions are an easy way to add golden crunch and savoury flavour to burgers, salads, soups, casseroles, and so many other dishes. With thin, evenly sliced onions, a light coating of oil, and careful cooking, you can make a delicious batch at home with minimal fuss.
PrintAir Fryer Crispy Onions
Air Fried Crispy Onion – Make crispy fried onions in an air fryer with just a hint of oil. No need to deep fry them to get the crispy caramelized texture and flavors.
- Prep Time: 5 minutes
- Cook Time: 25 minutes
- Total Time: 30 minutes
- Yield: 1 1x
- Category: Condiments
- Cuisine: Indian Inspired
Ingredients
- 2 medium to large yellow onions (or around 1 lb)
- 1 tablespoon cooking oil
Instructions
- Peel and cut onion into thin round slices.
- Drizzle oil over the slices and then gently separate the rings.
- Place the onion rings in the air fryer basket. Fry them initially at 300F for 10 min. Gently mix the rings at a 5 min interval.
- Now lower the temperature down to 240F and continue heating the rings. After every 5 min gently mix the rings. It will take 15-18 min @240F to get the desired color and texture.
Notes
- You may use either red or yellow onion. However, note that the red onion would result in a darker color of the fried onion.
- Cooking times may vary depending on the quantity of the onion in the air fryer. The time stated above is for ~1 lb onion. If you have a slightly larger batch, simply keep frying and checking every 5 min interval at 240F till you get the desired color and texture
