How to Reheat Food in an Air Fryer

An air fryer can warm leftovers quickly while restoring crispness to foods such as pizza, fries, roasted vegetables, and breaded items. It circulates hot air, so the surface may brown or dry before the center is warm. Use a moderate temperature, leave space around the food, and check doneness rather than relying on one time for every dish.

What You’ll Need

An air fryer and its basket or tray
Leftovers that have been stored safely
Tongs or a heat-safe utensil
A food thermometer for meat, poultry, fish, egg dishes, and other leftovers where temperature safety matters
Optional: a small amount of oil, an air-fryer-safe dish, or foil if your appliance manual permits it

Do not use a dish, liner, or foil that blocks airflow or can touch the heating element. Check your air fryer’s manual for approved accessories and any instructions about preheating.

Step-by-Step

Check that the leftovers are safe. Use food that was refrigerated promptly and kept at 40°F or below. Refrigerate perishable leftovers within two hours of cooking, or within one hour if the surrounding temperature is above 90°F. In general, use refrigerated leftovers within three to four days; discard food that sat out too long or whose storage history is uncertain. Reheating cannot reliably make improperly stored food safe.
Choose a suitable food and container. Air fryers work particularly well for foods that benefit from a dry, crisp exterior. Soups, sauces, and very wet dishes are better reheated in a microwave or on the stove. If using a dish, make sure it is oven-safe, fits with room around it, and is approved for your model.
Preheat when appropriate. Follow the appliance instructions. If preheating is recommended, set the fryer to about 325–350°F and let it heat for a few minutes. A preheated basket can crisp food sooner, but preheating is not essential for every model or food.
Prepare the food evenly. Separate pieces that are stuck together and cut unusually large portions into smaller, similar-sized pieces when practical. Lightly mist dry foods with oil if desired; do not pour oil into the basket. For foods that tend to dry out, use a lower temperature or a covered, air-fryer-safe dish only if the manual allows it.
Arrange food in one layer. Put pieces in the basket with space between them so hot air can circulate. Avoid filling the basket tightly. Reheat in batches if necessary; a crowded basket heats unevenly and tends to leave food soft rather than crisp.
Set a moderate temperature. A useful starting range for many leftovers is 300–350°F. Delicate or thin foods often do better near the lower end, while sturdy breaded foods may tolerate the higher end. There is no single temperature or time for all foods, so use a recipe or appliance guidance when available.
Heat briefly, then inspect. Start with about three to five minutes for small or thin portions, and longer for dense or larger pieces. These are starting points, not guarantees. Open the basket carefully, turn or shake food if appropriate, and continue in one- to two-minute intervals until it is hot throughout. Avoid repeatedly opening the fryer more than needed because heat escapes.
Check the center with a thermometer. USDA guidance is to reheat leftovers to 165°F. Insert a food thermometer into the thickest or coolest part without touching bone or the basket. For mixed dishes, check more than one spot. A crisp exterior or steaming surface does not prove the center has reached a safe temperature.
Rest briefly and serve. Let the food sit for a minute or two if it is very hot, then serve promptly. Handle the basket and dishes with care. Do not leave reheated food at room temperature for more than two hours, or more than one hour when the surrounding temperature exceeds 90°F.

Common Mistakes

Using high heat for everything: A very hot setting can scorch edges while the middle remains cold. Start lower and raise the temperature only if the food needs more browning.
Overloading the basket: Stacked or crowded food blocks airflow. Use batches and turn pieces so they warm evenly.
Trusting the timer alone: Air fryer models, portion sizes, and starting temperatures vary. Use time as a guide, inspect the food, and check temperature when safety requires it.
Reheating food left out too long: Heating does not undo every risk from unsafe storage. Discard perishable food that exceeded the recommended time at room temperature.
Putting loose liners or foil in an empty fryer: The fan can lift loose material toward the heating element. Use accessories only as directed by the manufacturer and keep them secured beneath food when applicable.
Assuming crisp means hot inside: A browned crust can hide a cool center. Check thick pieces separately and use a thermometer for temperature-sensitive leftovers.

Tips

For pizza, arrange slices in a single layer and begin checking after a few minutes; lower heat helps the cheese warm without over-browning the crust.
For fries and roasted vegetables, shake the basket once during reheating. A light coating of oil can help revive a dry surface, but it is optional.
For breaded chicken or other thick pieces, use moderate heat and allow extra time. Verify that leftovers reach 165°F at the center rather than judging by color.
For rice, pasta, or casserole portions, spread the food in a shallow, air-fryer-safe dish if the container and appliance allow it. Stir or rearrange midway so the middle heats evenly; check the center for 165°F.
Reheat only the amount you plan to eat. Repeated warming and cooling can reduce quality and make safe handling harder.
Clean crumbs and grease from the basket after it cools. A clean fryer is less likely to smoke or transfer burnt flavors to the next batch.

Troubleshooting

The outside is crisp but the middle is cold: Lower the temperature, break up or divide the portion if practical, and continue heating in short intervals. Turn the food and check its center with a thermometer.

The food is dry or tough: It may have been heated too long or too hot. Use a lower setting, check sooner, and consider a small amount of oil for foods suited to it. For moist dishes, a microwave or stovetop may work better.

The food is soft instead of crisp: Remove excess moisture, avoid covering it unless necessary, and cook in a less crowded layer. Add a short finishing interval at a somewhat higher setting only after the food is already hot through.

One side heats faster: Turn or shake the food halfway through, and arrange pieces with space between them. If your fryer has a known hot spot, rotate the basket or tray if the manual permits.

The fryer smokes: Stop the appliance and unplug it if safe to do so. Let it cool before checking for excess grease, crumbs, or food touching the heating element. Do not pour water into a hot appliance or continue using it if it appears damaged.

You cannot tell whether it is safe: Check with a thermometer and reheat leftovers to 165°F. If the food was stored improperly, left out beyond safe limits, or has an uncertain history, discard it rather than trying to rescue it by reheating.

Frequently Asked Questions

What temperature should I use to reheat food in an air fryer?

About 300–350°F is a practical starting range for many foods, but the best setting depends on thickness and texture. The key food-safety target for leftovers is 165°F in the center, checked with a thermometer.

How long does it take to reheat leftovers?

Small, thin portions may take only a few minutes, while dense or thick portions take longer. Start with a short interval, inspect and turn the food, then continue until it is hot throughout.

Can I reheat food in an air fryer without preheating?

Usually, yes, though your model’s manual takes priority. Preheating can help crisp food more consistently, while starting cold may simply require a little more time.

Can I put aluminum foil in an air fryer?

Only if the manufacturer permits it and the foil is secured so it cannot be pulled into the heating element. Do not cover the entire basket or block airflow, and never preheat with loose foil inside.

Can I reheat leftovers more than once?

For best quality and simpler food handling, reheat only the portion you will eat. Keep the remaining food refrigerated promptly, and do not use reheating to compensate for food that was held unsafely.

Is an air fryer suitable for every leftover?

No. It is useful for many crisp or roasted foods, but soups and saucy dishes are generally easier to heat on the stove or in a microwave. Use an air-fryer-safe dish only when your appliance instructions allow it.

Further reading: USDA FoodSafety.gov. Details can change, so check the official page for anything that matters to you. Spotted a mistake? Tell us. How we write an answer.