Can You Put Glass in an Air Fryer?

Borosilicate glass (sold under brands like Pyrex in the US, or labeled 'borosilicate' on European products) is formulated to handle thermal shock — sudden temperature swings — and is safe in air fryers at the temperatures they produce (up to about 400°F / 205°C). Tempered soda-lime glass bakeware labeled 'oven-safe' is also generally fine, though it has a lower thermal-shock tolerance than borosilicate. Glass that is NOT safe: regular drinking glasses, Mason jars, decorative bowls, glass food-storage containers (most Tupperware-style lids), and any glass not explicitly labeled oven-safe. Even 'microwave-safe' glass is not the same as oven-safe — microwave-safe only means the glass does not absorb microwave energy, not that it can handle dry convection heat.

An air fryer's heating element raises the air temperature very rapidly — from room temperature to 400°F in 3–5 minutes. Ordinary glass cannot expand and contract fast enough to follow this thermal change without developing stress fractures. In a conventional oven the temperature rises more slowly, giving glass more time to adjust. The concentrated hot air in an air fryer is more like a broiler environment than a normal bake, which is why glass that has worked fine in oven recipes can still fail in an air fryer. A shattered glass dish inside the cooking cavity is a serious safety hazard and can damage the basket coating.

For most air fryer applications, a small metal baking pan, a silicone mold, or aluminum foil formed into a tray is the better choice. Metal conducts heat faster than glass, so food cooks more evenly and browns better. Silicone bakeware rated for oven use (usually to 450°F / 230°C) is completely safe in air fryers and is flexible enough to release food without sticking. If you specifically need to see the food from the side — for example, a layered dessert — an oven-safe glass ramekin is acceptable, but verify the manufacturer's oven rating first.

If you have confirmed oven-safe borosilicate or tempered glass ramekins, they work well for small baked dishes, molten lava cakes, egg custards, or individual gratins in the air fryer. Place the ramekin in a preheated fryer (not a cold one) to reduce thermal shock, and never move a hot glass dish directly onto a cold countertop — let it cool on a wooden board or trivet. Check for any micro-cracks or chips before each use; damaged glass is significantly more likely to shatter under heat stress.

Can you put glass in an air fryer?

Only oven-safe borosilicate glass (the kind rated for conventional oven use) is safe in an air fryer. Tempered glass bakeware labeled 'oven-safe' generally handles air fryer temperatures well. Regular drinking glasses, mason jars, and decorative glassware are not safe — they can shatter from the rapid temperature changes. Always check the manufacturer's rating before placing any glass in an air fryer.

Is glass or metal better to use in an air fryer?

Metal pans (aluminum, stainless steel, or dark non-stick) are generally better for air fryer use because they conduct heat more efficiently and respond faster to temperature changes. Glass transfers heat more slowly and can produce uneven results in the concentrated hot-air environment. Use metal for browning; use oven-safe glass only when you need to see the food (like a casserole) or when a recipe specifically calls for it.

Can you use Pyrex in an air fryer, and how is it different from decorative glass?

Pyrex and other borosilicate oven-safe glass dishes are designed to handle rapid temperature changes and are generally safe in an air fryer up to their rated limit (usually 425–450°F). Decorative glass — such as colored serving bowls, wine glasses, or any glass not marked oven-safe — is not tempered for heat and can shatter without warning. Always check the bottom of the dish for an 'oven-safe' marking before placing any glass in an air fryer.