June 23

Can You Put Foil in Toaster Oven? – Learn Here

Author: Gisele Perez
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There is a list of risks and safety precautions attached with operating a toaster ovens, many of these deal with what you can place inside. The most popular of queries relate to can you put foil in toaster oven.

Foil is safe to use in most toaster ovens IF AND ONLY IF you have taken the safety precautions into consideration. For instance covering the break crumb tray with foil is a safety hazard. We go over the myriads of precautions to take below in this article.

Being able to use foil in your toaster oven will also depend on your ovens manufacturer. That is why you should always check your oven manual before attempting to do this.

IF your toaster oven is not aluminum foil safe, it can heat up too fast and damage it in the best case scenario or create a fire in the worst case scenario.

It is imperative that you keep your oven safe and avoid unverified practices to avoid such occurrences.

In this article, we will discuss more about aluminum foil and when it is safe to use them in your toaster oven.

Also Read: Can you put toaster oven on top of microwave?

Can You Put Foil in Toaster Oven?

Most people have one time or an other used foils in their toaster oven.

While there is nothing wrong in placing aluminum foil in toaster oven, it can be potentially dangerous. This is because not all placement practices are safe for toaster oven.

Brands that do not expressly state oven safe items would likely expect that their users take minor precautions before using items like foil in their brand toaster ovens.

How to Use Aluminum Foil in Toaster Oven Safely

When you buy a new toaster oven, the first thing to do is check the manual for items or things that are safe for use in your toaster ovens.

Most brands will usually state the safety hazards and precautions you should take before using them.

When you want to use foil in your toaster oven, ensure that you cut it to the exact size of the pan you are laying it in and follow the food recipe.

Ensure that you abide by all the precautionary measures mentioned below so as to keep it safe and avoid kitchen accidents.

Line Your Oven Rack or Baking Tray with an Aluminum Foil

In most cases it is alright to line the wire rack or the backing tray with an aluminum foil as long as they are not touching the sides or the heating elements.

You have to make certain that you remove the aluminum foil from the rack regularly and do not let grease accumulate on top.

As earlier mentioned, most toaster oven brands easily state in their manuals if its alright to use foil on the racks.

Do Not Let Your Foil Touch or Stay Close to Your Oven Heating Element

The possible dangers and risks attached to doing this are better avoided.

Allowing aluminum foil close to your toaster oven heating element will only do damage to your microwave oven.

It can cause a fire which isn’t good in any form.

Have at least an inch of clearance between the foil and the heating element.

If the heating element touches the aluminum foil, it may not be able to sustain the high heat and eventually damage the heating element permanently. Let alone the fact that it may start a fire.

Ensure that Your Foil Does Not Touch the Sides of Your Oven

This might seem slightly extreme. But when dealing with issues like potential fires, it is better to be safe than sorry.

The wall of your toaster oven is almost as hot as the ovens heating element when its on.

Letting foil paper touch your oven wall can start a fire or ignite a spark and you really don’t want that.

Avoid Using Foil with Oily Foods

Though you might feel like foil is the only option to use, that isn’t necessarily true. Oil, heat and foil don’t mix well, putting all three in the same place can create a recipe for disaster.

Foods containing animal protein or fats should not be prepared using aluminum foil.

But if you do not have any other alternative, make sure that the oil from the food is not dripping unto the oven heating element or other potentially dangerous parts of the oven.

If the recipe calls for using the aluminum foil, make certain you follow it to the letter.

Avoid Using Foil on Your Crumb Tray

This is because crumb trays are usually very hot, they are sometimes put close to the heating element.

In order to avoid kitchen hazards, it is advised that you don’t use foil to cover or overlay your oven crumb tray

Don’t Encase Your Food Totally in Foil

encase food
Encasing food traps heat and can cook the food faster than you expect.

It is easy to make a habit out of wrapping your foods in foil while you prepare it, but this is also very dangerous.

Foil insulates heat and this heat can get trapped in your food causing it to burn it quicker than you think.

If you want to encase your food, make certain there is some gap or a hole that the warm air can escape through.

Also Read: How to clean a toaster oven after a fire?

Dangers of Using Foil in Toaster Oven

It Can Damage the Oven Heating Elements

melted aluminum foil
Aluminum Foil CAN melt. Source: cooking.stackexchange

If you use aluminum foil in your toaster oven without taking special precautions like moving it far away from the oven heating elements, it can damage the ovens heating elements.

The heating element of your toaster oven is the hottest part of your oven. The heat is spread directly from your oven heating element to the other parts of the oven.

When the foil is set too close to the heating element, it acts as a reflector that reflects the heat back on top the heating elements.

This can results in temperatures higher than the oven is designed to operate at.

Plus any accidental contact with the heating element will cause the aluminum foil to heat up very fast and can melt it.

Insulates Heat

Most people do not know how dangerous using aluminum foil in their toaster ovens can be.

Foil is a very efficient heat insulator which means when you use foil in your oven, especially when you use it to layer foods, it does not allow the heat to escape.

Similarly, if you were to line up your toaster oven entirely with aluminum foil, which you should NOT at all, it would trap the heat inside.

Blocks Heat Circulation

Lining your toaster oven wire tray with an aluminum foil might also result in uneven cooking as it block the heat from cooking the food placed on top.

The wire tray are designed so that the heat can circulate inside through the wide gaps in between. If you block these with an aluminum lining, you will have potentially decreased the efficiency of the toaster oven.

It Can Cause Electrical Sparks

Using foil in your microwave oven can cause the oven to spark, especially if it is placed too close to the oven walls.

This happens because aluminum foil is an excellent electrical conductor. Good Heat Insulator and Good Electrical Conductor.

Aluminum Leaches Into Food

It is also worth noting that aluminum can be a health hazard.

According to research by International Journal of Electrochemical Science, there is evidence that when using aluminum at such high temperature along with food, some particles of aluminum can leach into your food.

Alternatives to Aluminum Foil

With all the dangers attached to using foil in toaster ovens, it is not surprising that some people now consider other alternatives to foil in toaster ovens.

Some of these better alternatives includes foil plates, oven liners, baking mat(silicone), baking/roasting pans, pizza trays e.t.c

Perhaps one of the easiest and the cheapest option is to use parchment paper.


In this article, we talked extensively about can you put foil in a toaster oven.

Using foils in your toaster oven is not all wrong but before you attempt to do that, you should ensure that you have studied the right practices and have also consulted the manual.

Also you can also look into alternative that are designed to be toaster oven safe.


1. Is it safe to put foil in a toaster oven

What we do know for certain is that you should NEVER cover your crumb tray or the inside walls of your toaster oven with foil. This can result in overheating and is a potential fire danger. To determine whether you can use foil in your particular toaster oven, examine the owner's manual or contact the manufacturer.

2. Can I use other materials instead of foil in my toaster oven?

Yes, you can use other materials like parchment paper or a baking sheet instead of foil in your toaster oven. Just be sure to keep an eye on it to make sure the food doesn't burn.

3. Which side of aluminum foil is toxic?

Aluminum foil is really composed of two layers: an aluminum layer and a coating layer. The aluminum layer's exposed surface oxidizes and transforms into aluminum oxide, resulting in the matte side. In that scenario, the shiny side should be used, as aluminum oxide is not particularly healthful.

4. Does foil cause dementia?

While aluminum has been detected in amyloid plaques, there is no conclusive evidence that aluminum levels in the brains of persons with Alzheimer's disease are elevated. There is no solid evidence linking the amount of aluminum in the body to the development of Alzheimer's disease.

5. Can wax paper go in toaster oven?

While wax paper is a cost-effective alternative, it is not suggested for use inside a toaster oven due to the wax paper's inability to withstand high temperatures. It is flammable at elevated temperatures. It can easily catch fire if it comes into contact with the toaster oven's heating elements.

About the author

Gisele Perez

When not giving in-home, hands-on cooking classes, or developing recipes, Gisele "cooks" wonderful posts for us. She writes about various topics related to cooking appliances and cooking methods.


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