How to Get a Crispy Result in an Air Fryer with Little or No Oil

For a crispy result in an air fryer, avoid overfilling the basket and brush a thin layer of oil over the food; when hot air can circulate freely, moisture evaporates quickly and the surface browns. If the basket is too full, air cannot circulate and the food stays soft, as if steamed, instead of browning. It is possible to cook without any oil, but the result is usually less crispy; even a spoonful of oil can make a noticeable difference on the surface. For most recipes, especially breaded or battered foods, aiming for “low-oil” rather than “oil-free” is more realistic.

How full should the basket be?
Filling the basket no more than two-thirds full allows hot air to reach every side of the food. In an overfilled basket, the pieces at the bottom trap steam and do not crisp. If you are cooking a large quantity, cooking it in two batches gives a better result than overfilling the basket once. Shaking or stirring the basket 1–2 times during cooking helps air reach the pieces at the bottom; this makes a noticeable difference with thinly cut foods such as fries. Make sure the holes in the basket grate are not blocked so air can circulate properly.

Why does preheating make a difference?
Preheating the air fryer for 3–5 minutes lets the food meet hot air immediately instead of entering a cold environment and slowly losing moisture; this helps the surface brown faster. Food cooked without preheating generally takes a few minutes longer than expected to crisp. Preheating has an even more noticeable effect on frozen foods because a cold surface releases moisture more slowly.

What temperature should you use?
A temperature of 190–200°C / 375–390°F works well for most vegetables and frozen products, providing a balance between cooking the inside and browning the surface. Lower temperatures cook the food without drying it out, but do not make it crispy. For thick pieces, lowering the temperature slightly and extending the cooking time can help cook the inside without burning the outside. Check the basket halfway through cooking and stir if needed to help the food brown evenly.

How to use oil properly
Instead of pouring oil directly over the food, spread a thin layer with a brush or spray. This helps you use less oil and promotes more even browning; a thick layer may drip to the bottom of the air fryer and produce smoke. For toasted breadcrumbs or breaded recipes, this thin layer of oil gives a crispness close to pan-frying. Choosing an oil that tolerates high heat instead of olive oil can reduce smoking.

How to clean the air-fryer basket and parts
Wash the basket and tray with warm, soapy water after each use. If residue is sticky, soak the parts in water for a few minutes to soften it; dried grease can produce a smoky odor during the next cooking session. From time to time, unplug the appliance, let it cool completely, and then wipe the heating area at the bottom with a damp cloth. Scrubbing the basket’s nonstick coating with a metal brush or steel wool can scratch it, making cleaning harder and reducing crisping performance.