Can You Microwave Bento Boxes? (Answered)

Categorized as Microwave Safety
can you microwave bento boxes

Bento boxes have become increasingly popular in recent years as more and more people look for convenient and appealing ways to carry their packed lunches. Whether you’re taking your lunch to school, work, or a picnic, a bento box is a great option. And it’s not just kids who love them – adults are getting in on the action too!

And one of the most common questions people have about bento boxes is whether or not they can be microwaved. After all, if you’re looking for a quick and easy way to reheat your lunch, the microwave is often the first choice.

So, Can You Microwave Bento Boxes?

It depends on the type of bento box. Some bento boxes are made of microwavable materials, while others are not. In most cases, the bottom of the bento box will be microwave-safe, but the lid may not be.

If you’re unsure whether your bento box is microwavable, the first step is to look for a label or tag indicating whether it’s safe to put in the microwave. Or, you can also check the instructions that came with your particular bento box to see if microwaving is recommended.

If you can’t find any indication one way or the other, it’s best to err on the side of caution and avoid microwaving your bento box. Microwaving non-microwavable bento boxes can damage the microwave and potentially release harmful chemicals into your food.

Why We Reheat Our Bento Boxes

There are few things more disappointing than opening up your bento box to find that your food has gone cold. Whether you’re at work, school, or on the go, a lukewarm meal is often just not worth the effort.

That’s why so many of us choose to reheat our bento boxes before eating. Not only does this allow us to enjoy our food at its ideal temperature, but it also gives us a chance to add a bit of extra flavor.

By heating our food, we can activate certain ingredients that might otherwise go unnoticed. Whether it’s a sprinkle of crushed red pepper or a drizzle of soy sauce, heating our food can help to bring out its full potential.

And with microwave-safe bento boxes, reheating our food is quick and easy. Just pop your bento box in the microwave for a few minutes, and you’re good to go!

How To Heat Your Bento Box In The Microwave

The microwave is the quickest and most convenient way to reheat your bento box. Just pop your bento box in the microwave and heat it for a few minutes, and you’re good to go.

However, one thing to keep in mind is that certain ingredients don’t reheat well in the microwave. Salad or pickle, for example, should be removed from your bento box before reheating.

And if you’re reheating a bento box that contains meat, fish, or poultry, be sure to heat it until the meat is cooked through. For the best result, don’t reheat your bento box for more than a couple of minutes, as this can dry out the food.

One key tip to remember when reheating your bento box is to add a small amount of water, sauce, or oil to the meat before reheating. This will help to keep the food moist and prevent it from drying out.

Another important tip is to ensure the food is covered with a microwave-safe lid. This will help trap the steam and prevent the food from drying out.

And if you’re concerned about safety, you can use a food thermometer to check that the internal temperature of the meat has reached at least 165 degrees Fahrenheit.

Why You May Want To Consider Insulated Bento Boxes

If you don’t have access to a microwave, you may want to consider insulated bento boxes. These bento boxes are designed to keep your food warm for hours at a time, making them ideal for office workers or students who do not have access to a kitchen.

You can often find ones with multiple compartments so you can pack various foods, and they’re usually pretty lightweight too.  Plus, they’re often dishwasher-safe, so cleanup is a breeze.

Just be sure to choose an insulated bento box made of safe materials such as BPA-free plastic. And if you’re using it to reheat food, be sure to follow the instructions carefully to avoid any safety hazards.


One of the best things about bento boxes is that they’re often microwave-safe, which means you can quickly and easily reheat your food.

However, not all bento boxes are microwavable, so it’s important to check the label or instructions before heating.

If you’re unsure whether your bento box is microwavable, the best thing to do is to err on the side of caution and avoid microwaving it.

By Rosie Elliott

I’m Rosie. I’m a professional chef with experience in Western, Mediterranean, and Italian cuisine. I’ve been cooking for over 15 years, and I have two daughters that keep me busy!