Can You Put Aluminum Foil in the Oven or Air Fryer?
By AnoyUpdated Last reviewed How we calculate
Yes. Aluminum foil is safe in both the oven and the air fryer. In an air fryer, put it in the basket only, under the food so it is weighed down, and never cover all the holes or preheat with loose foil inside. In the oven, don’t use foil to line the oven floor.
In the oven
Yes
Foil is fine on sheet pans and for covering dishes. Do not line the oven floor or block vents; many manufacturers warn it can damage the oven and affect heating.
In the air fryer
Yes, with care
Use a small piece in the basket, under the food. Leave room around the edges so air can circulate, and never put foil in the drawer underneath the basket.
How to use aluminum foil safely
- Always put food on top of the foil so the fan cannot lift it.
- Leave gaps around the edges; covering the whole basket blocks the airflow that makes an air fryer work.
- Shape a small tray or loose tent for saucy or delicate foods.
What to avoid
- Preheating an empty air fryer with foil inside.
- Lining the bottom of the oven.
- Acidic foods (tomatoes, citrus, vinegar marinades) for long cooks; they can react with the foil.
Alternatives
- Perforated parchment liners keep airflow better in an air fryer.
- Silicone liners are reusable and easy to clean.
Frequently asked questions
Which side of aluminum foil should face up?
It doesn’t matter for everyday cooking. The shiny and dull sides are a result of manufacturing and perform the same, except for nonstick foil, where the coated side should face the food.
Does foil make air fryer food less crispy?
Yes, a little. Foil blocks air from the underside, so flip food halfway or use perforated parchment instead.
Can I put foil in the bottom of my air fryer drawer?
No. Foil under the basket can block airflow and trap grease near the heating area. Keep it inside the basket under the food.
Always follow your appliance manufacturer’s instructions; they override general advice.