
The air fryer has become one of the most common kitchen appliances. Like traditional ovens and microwaves, even the latest additions require special utensils to function properly, including racks, baskets, baking trays, casserole dishes, and containers suitable for cooking food safely . Using the wrong materials or incorrectly can lead not only to disappointing culinary results but also to potentially dangerous situations. This is why it's important not to underestimate the containers you put in your air fryer: let's see which ones are safe to use and which ones should be avoided.
Why Not All Containers Are Suitable For the Air Fryer
Let's start with a brief introduction: the air fryer can be compared to a compact fan oven, very convenient because it is small in size, quick in cooking times and simple to use, with the ability to cook the most diverse recipes (chips, cutlets, omelettes, cakes, lasagna, roasts) and to use fewer condiments in all those preparations that in the traditional version require the use of a significant amount of fat, such as frying, while still guaranteeing a crispy but lighter consistency. All this is made possible by the particular functioning of the appliance, which quickly heats the air and circulates it equally quickly inside the chamber. And this is precisely where the containers, the materials they are made from and their shape come into play: some supports, in fact, are not suited to withstanding the high temperatures that develop, with the risk of burning, warping or even melting, others, if too large or sealed, impede the proper passage of air, compromising the final result, as well as ruining the machine.
Which Containers Are Safe to Use
The appliance's success has led to the availability of numerous containers compatible with air fryers, and this advantage is clearly indicated on the label or packaging, eliminating any doubt. Otherwise, most materials used in traditional ovens are also suitable; you just need to consider the dimensions. Here's what to choose.
1. Stainless Steel

Stainless steel baking pans and molds are among the safest because they are made of stainless steel and can withstand high temperatures perfectly. They are generally available with a non-stick coating, which prevents food from sticking and makes cleaning easier.
2. Pyrex

If you want to opt for a glass container, then the best solution is borosilicate glass, known commercially as Pyrex, which is used to make pots and glasses as well as transparent ovenproof dishes. Its unique feature is its resistance to temperature changes and high temperatures, as well as ensuring sturdiness and durability over time, accommodating a wide variety of preparations.
3. Silicone

Silicone containers come in a variety of shapes, from muffin cups to full-size cake molds. They're convenient because they're now multipurpose, resistant to both low (freezing) and high temperatures; it's no coincidence that many baked cakes are easy to unmold once cooked in them. However, it's important to check that they're heat-resistant (over 395°F/200°C) and in good condition, to avoid the risk of warping or even leaking.
4. Porcelain and Terracotta

Both are spectacular materials in the kitchen, often used to present traditional recipes served in attractive casseroles and pans (such as eggs). The same rules apply to both as for traditional ovens. Only porcelain and ceramics that can withstand high temperatures are suitable, specifically designed to tolerate heat without being damaged (for example, by cracking the glaze). Therefore, decorative plates or bowls should not be considered, nor should those with decorations: even overly heavy baking dishes are a no-no.
5. Aluminum

The classic disposable trays that are oven-safe are also suitable for the air fryer. The precaution is the same: don't use them to store highly acidic or salty foods for too long, as they contribute to metal corrosion, which then migrates into the food.
6. Baking Paper and Muffin Cups

Parchment paper can also be used in an air fryer, as long as it can withstand high temperatures and doesn't impede proper air circulation. Specially designed sheets and trays, often pre-perforated, are available on the market. Paper muffin cups are also suitable, as long as they are always filled with food during cooking. The paper should never be inserted unattended: the airflow could lift it, causing it to come into contact with the heating element, potentially burning it or causing malfunctions.
Containers You Should Never Use
Of course, there are some very common kitchen materials that are best kept away from the air fryer. Although popular, plastic, for example, is generally the enemy of this appliance, as it can both melt and release particles into food. In this regard, it's worth adding a few words about aluminum: although it's not prohibited in functional terms, as the trays are heat-resistant, many manufacturers recommend using aluminum foil with caution, avoiding completely covering the basket so as not to impede air circulation. Wood and bamboo should also be avoided, as are paper containers (such as bread bins), as they are flammable.

However, avoid paper bags, non-food paper, and containers not suitable for high temperatures, as they are easily flammable or subject to deterioration during cooking.
Finally, never forget that the airflow must not be obstructed, so do not insert Tupperware-type containers with sealed lids or any other supports that are too bulky compared to the dimensions of your model.