Ella Walter
Cooking onions in an air fryer is a quick and easy way to add flavour and texture to a variety of dishes. From burgers to salads, soups to curries, air-fried onions can be used as a topping or mixed into your favourite recipes. The air fryer brings out the sweet roasted flavour of onions with minimal preparation and clean-up. This guide will cover everything you need to know about cooking onions in an air fryer, including the best types of onions to use, preparation methods, cooking times, and serving suggestions.
| Characteristics | Values |
|---|---|
| Onion Type | Sweet, Red, White, Yellow, Shallots |
| Onion Size | Large, thinly sliced |
| Oil | Ghee, Olive, Avocado, Vegetable, Extra Virgin Olive, Cooking |
| Seasoning | Salt, All-Purpose Seasoning |
| Air Fryer Temperature | 300-375°F |
| Cooking Time | 10-30 minutes |
| Texture | Crispy, Crunchy, Soft, Tender |
| Colour | Golden Brown |
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What You'll Learn
How to slice onions for an air fryer
When preparing onions for an air fryer, it's important to slice them thinly and evenly. This will ensure that they cook evenly and achieve the desired golden brown colour. You can use a sharp chef's knife or a mandolin to slice the onions. It's also important to note that onions will shrink during the cooking process, so it's a good idea to slice more onions than you think you'll need.
To reduce tears while slicing onions, you can try cutting the onions under running water or underwater in a filled hard plastic container. You can also try wearing goggles to protect your eyes from the onion vapours.
When slicing onions for an air fryer, it's best to use larger onions as they are easier to cut into evenly sized slices. You can use any type of onion, such as yellow, red, or white onions, depending on your preference for sweetness or flavour.
Once you have your thinly sliced onions, you can place them in a bowl and add a small amount of oil and seasoning. Toss the onions until they are well-coated, and then spread them evenly in the air fryer basket. Make sure not to overcrowd the basket, as this will prevent the onions from cooking evenly.
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Oil and seasoning
A small amount of oil is required to help the onions caramelize and become tender. You can skip the oil if you want a lighter version, but the onions might turn out drier. Any type of cooking oil will work, but extra virgin olive oil is recommended for a more savory flavor. Coat the onions lightly and evenly with oil, and toss to combine. You can also spray the basket of the air fryer with oil, or use cooking spray.
If you want to season your onions, you can add a teaspoon of your preferred seasoning. One source recommends Vegeta all-purpose seasoning. You can also add a pinch of salt to up the seasoning.
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Air fryer temperature and time
The cooking time and temperature for onions in an air fryer depend on the type of onion and the desired texture and colour. The size of the onion and the specific model of the air fryer also affect the cooking time. Here is a general guide:
For sliced onions: Set the air fryer to 350°F (180°C) and cook for 5–7 minutes, depending on the desired texture. This temperature and time setting will produce lightly browned and softened onion slices. If you prefer your onions to be more crispy and browned, increase the cooking time by 1–2 minutes.
For diced onions: A temperature of 350°F (180°C) is also suitable for diced onions. Cook for 4–6 minutes, stirring halfway through, for a softened texture. If you want your diced onions to be more caramelised and browned, increase the temperature to 400°F (200°C) and cook for an additional 2–3 minutes.
For whole onions: Cooking whole onions in their skins imparts a delicious, mild flavour. Set the air fryer to 400°F (200°C) and cook for 15–20 minutes, depending on the size of the onion. This will result in a softened, slightly charred whole onion that can be used in various dishes.
It's important to note that every air fryer model is different, so the cooking times may vary slightly. Always keep an eye on your onions while they're cooking to ensure they don't burn. Additionally, some air fryers may require you to shake the basket or toss the onions halfway through the cooking process to ensure even cooking.
Feel free to adjust the temperature and timing based on your preferences and the specific model of your air fryer. Experimenting is part of the fun of cooking with this versatile appliance!
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How to store air-fried onions
Air-fried onions can be stored in an airtight container in the refrigerator for up to a week. They can also be frozen in an airtight container or freezer bag and stored for up to three months. To freeze, spread the onions out on a baking sheet and place them in the freezer. Once frozen, transfer the onions to a freezer bag or container.
When preparing the onions for storage, it is important to let them cool completely before placing them in the airtight container. This helps to prevent condensation, which can lead to soggy onions.
If you are using a vacuum sealer, the onions can be stored for several weeks. This method removes all the air from the bag, creating an airtight seal that helps to extend the storage time.
To reheat the onions, you can either use the stove or the air fryer. If using the air fryer, allow the onions to thaw in the refrigerator overnight before reheating. This will help ensure even cooking.
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What to serve air-fried onions with
Air-fried onions are a versatile dish that can be served with a variety of meals. Here are some ideas on what to serve them with:
Burgers
Air-fried onions, especially the caramelized variety, are a perfect topping for burgers. They add a burst of flavour and a crunchy texture to your regular burger. You can also use them in veggie burgers for added taste.
Hot Dogs
Air-fried onions are a delicious topping for hot dogs, adding a crunchy texture and a savoury flavour to the meal.
Rice Bowls
Air-fried onions can be a crunchy and tasty addition to rice bowls. They go especially well with Indian rice dishes like chicken or vegetable biryani, pulao, and curries.
Soups
Air-fried onions can be used as a garnish for soups, adding a layer of flavour and texture. They are particularly good in French onion soup, and other soups like Indian shorbas.
Salads
Air-fried onions can be used as a salad topping, adding a savoury crunch to your bowl of greens. They are a great way to add flavour to your salad without the extra fat and calories of sautéed onions.
Sandwiches
Air-fried onions can be used as a sandwich filling or topping, adding flavour and crunch to your sandwich. They are a great addition to grilled cheese sandwiches, taking them to the next level.
Wraps
Air-fried onions can be used as a tasty filling for wraps, adding flavour and texture to your roll-up meal.
Omelettes
Air-fried onions are a great addition to omelettes, providing a savoury flavour and a soft texture to the egg dish.
Casseroles
Air-fried onions can be sprinkled on top of casseroles, such as the Thanksgiving favourite, green bean casserole. They add a crunchy texture and a savoury flavour to the dish.
Pasta
Air-fried onions can be mixed into pasta dishes, adding a burst of flavour and a soft texture.
Stir-Fries
Air-fried onions can be cooked alongside other vegetables in stir-fries, adding flavour and texture to the dish.
Fajitas
Air-fried onions are a tasty addition to fajitas, providing a savoury flavour and a soft texture to the wrapped meal.
Curries
Air-fried onions can be used in curry dishes, such as a lamb korma, or blended into a curry paste. They add depth, sweetness, and a wonderful creaminess to homemade curry pastes.
Marinades
Air-fried onions can be blended with ginger, garlic, tomatoes, and spices to create a delicious marinade.
As a Side Dish
Air-fried onions can also be served as a side dish on their own. They make a tasty and healthy snack, especially when you are short on time as they cook quickly.
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Frequently asked questions
You can use any type of onion in an air fryer, including red, white, and yellow onions, as well as shallots. The larger the onion, the better, as it gives you more to work with and makes it easier to get evenly sized slices.
You can cut the onions into any size pieces or shape that you like, but the smaller they are, the quicker they will cook. For even cooking, it is recommended to cut the onions as evenly as possible. You can use a sharp chef's knife or a mandolin to cut thin, even slices.
The cooking time will depend on the desired texture and the quantity of onions. For crispy onions, cook for 20 minutes at 350°F, shaking the basket every 5 minutes. For softer, more caramelized onions, extend the cooking time by a few minutes.
