Why Do Baking Trays Rust in the Dishwasher?

The dishwasher made life easier by saving time spent washing cookware, but there are still some drawbacks to it. Whether you are using a non-stick baking tray or cast-iron pans, proper care is necessary while washing to prevent the cookware from rust and health consequences.

Why do baking trays rust in the dishwasher?

When the baking trays lose their protective layer and seasoning, the metal underneath becomes exposed to water and rusty in dishwashers. A rusty surface results from iron oxide form when exposed to oxygen. Water speeds this process up in dishwashers and turns the baking trays rusty.

To learn more about baking tray rust, how to keep them from rusting, and how to remove rust from them keep reading the following article.

Why Do Baking Trays Rust in the Dishwasher

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Why Do Baking Trays Rust?

So, why are my baking pans rusting? the most common materials used for baking trays are Teflon, aluminum, stainless steel, or cast iron. When these materials directly interact with water or oxygen, they form hydrated iron oxide, also known as rust. The rust is most likely to occur when the non-stick coating has been damaged by carelessness.

However, you can still use your rusty pan with proper cleaning and preventive steps. Whether using a cast iron pan or non-stick, adequate cleaning of your cookware can keep them away from rust, this main reason why do my baking pans rust.

Thoroughly dry off your cookware after washing because water on the cookware reacts with the iron and speeds up the rusting process. Also, try to wash your baking trays with a soft hand to keep them away from rusting.

You can prevent non-stick skillets from rusting in the dishwasher by seasoning your cookware regularly. Ensure to use specific dishwashers for baking trays to save their non-stick coating and avoid rusting. 

Learn more! See my article Can Baking Trays Go In The Microwave? for more information including baking trays.

Why Do My Pans Rust in the Dishwasher?

If you are still curious about why do baking pans rust in dishwasher, here are the factors:

  • Moisture: The high-humidity environment of a dishwasher can cause the metal to rust.
  • Detergents: Certain dishwasher detergents contain ingredients that can react with the metal and cause rust.
  • Scratches: Scratches on the surface of the pan can trap moisture and accelerate the rusting process.
  • Steel quality: The type of steel used to make the pan can also affect its tendency to rust.

To prevent rust, hand wash your pans and dry them thoroughly after each use. If you must use a dishwasher, choose a rust-resistant dishwasher safe pan and use a mild detergent without bleach or chlorine.

Do Rusty Baking Trays Cause Health Problems?

The rusty cookware has bacteria that could cause tetanus; still, a rusty baking tray doesn’t have any toxic effect on your health. However, using the rusty pan isn’t 100% safe for your health. If you are insensitive to iron oxide(rust), even ingesting a small amount of it could cause serious health hazards.

Ignoring the rusty cookware is not good because the bacteria that cause tetanus are mostly found on rusty surfaces like metal scraps or nails. When talking about health issues related to rust, tetanus is one of the significant issues, which is a nervous system infection and a severe disease.

In addition to health risks, rusty cookware also affects the taste of your food. Furthermore, rust on cookware is not good as it can contaminate food.

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How to Remove Rust from Baking Trays?

You can conveniently remove the rust from the baking tray by using dish soap, scrub & potato. In addition, the use of lemon juice, vinegar, and baking soda is also an excellent way to remove rust from your baking trays. Rust in the baking pans could have potential health risks, and it’s better to remove it from your cookware. 

Here are a few tips that are useful to remove the rust from the baking pans or any other cookware.

Using Dish Soap Scrub & Potato:

Potato works as a natural rust remover; it contains oxalic acids, which work best to dissolve rust. Cut the potato, dip it in the soap and rub it on the surface to scrub away the rust.

This method is perfect for removing rust from any material. It is convenient and natural to remove the rust from any skillet or non-stick pan.

Lemon Juice & Vinegar:

Using an acidic solution is best to prevent and remove rust from any metal. Lemon juice and vinegar are the best natural acids to dissolve the rust from baking pans. For this, take one part of each lemon juice and vinegar and soak the rusty area of your baking pan and leave it for a few minutes; the rust will get dissolved.

After thoroughly washing your cookware, the rust has dissolved fully. You can easily apply this method to any non-stick or metal skillet to remove the rust.

Use of Baking Soda:

Baking soda is one of the best cleaning products and has a more substantial base, which is abrasive and quickly dissolves the rust on any baking pan or iron skillet. Compared to vinegar, baking soda is not that strong, so it takes more time to remove the rust. 

Take the baking soda and an equal amount of water, mix them well to form a paste, spread the paste on the rusty area of your baking tray and leave it for an hour. Thoroughly wash and rub the baking tray with a soft hand and dry it with a soft cloth to get the perfect result.

Baking pans are a versatile tool for any kitchen, and everyone has wanted to use them for many years. The best way is to keep your favorite bakeware clean and dry. All the rust cleaning methods and rust-prevention steps will help remove the rust from your baking tray.

How to Keep the Baking Sheet from Rusting?

So, how to prevent rust on baking pans? Keep your baking sheet and tray dry and never leave them moisture for a long time to keep them safe from rusting. Try to wash baking trays with a soft hand, dry them thoroughly with a  paper towel or soft cloth, and make sure to keep the pan in a dry and cool place.

Rust on your favorite baking sheet or tray can ruin the taste of your cookies. Fortunately, there are many easy ways to keep the baking sheet safe from rusting. If you want more details on how to stop baking trays going rusty, follow a few tips that can save your baking sheets from rusting.


Avoid the rust forming on your favorite bakeware by following these tips:

  • Before storing the bakeware, ensure to dry them completely. Keeping them dry is the best way to prevent them from rusting.
  • Season the pans properly with a good vegetable or canola oil. It is good to keep the coating safe from scratches. 
  • Ensure to store the baking sheet in a dark, dry, and cool place because humidity and heat encourage rust buildup.
  • Occasionally use the rust-proof primer on the baking sheet and pans. It is best to make a protective layer on the cookware and keep them safe from rust buildup.  

Rust forms when your cookware constantly comes in contact with water. It mostly happens when you put the dump or wet cookware in the storage place. Ensure to keep the baking ware dry immediately after cleaning. If you find any spot of rust, apply the rust protector and clean it with a paper towel.


Although rust does not have any severe health issues, it is still good to keep your bakeware safe from rust forming. Ensure to keep your cookware as clean and dry as possible. If you found any spot of rust, then treat it immediately and use any method mentioned in the following article.


Can You Put Baking Trays in the Dishwasher?

Yes, but it’s not recommended as it can damage the tray’s finish over time.

Will Cookie Sheet Rust in Dishwasher?

It’s possible, especially if the sheet is made of metal and the dishwasher uses harsh detergents and high temperatures.

Will Baking Trays Rust in Dishwasher?

Baking trays made of metal are more likely to rust in the dishwasher, but those made of materials like silicone or non-stick coatings are generally safe.

Are There Dishwasher Safe Baking Trays?

Yes, some baking trays are specifically designed to be dishwasher safe, but it’s always best to check the manufacturer’s instructions before placing them in the dishwasher.

Are There Baking Trays That Don’t Rust in Dishwasher?

Baking trays made of materials like silicone or non-stick coatings are less likely to rust in the dishwasher compared to those made of metal.

Are Pans Rusting in Dishwasher?

Pans made of metal can rust in the dishwasher if they are not properly cared for, so it’s important to follow the manufacturer’s instructions and use mild detergents.

Can You Put Oven Trays in the Dishwasher?

Yes, but it’s not recommended as it can damage the tray’s finish over time, especially if the tray is made of metal.

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