Can You Freeze Onions? A Quick Guide

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People ask: Can you freeze onions? Would you believe me if I told you that yes, you can freeze onions?

If not, then read on. Believe it or not, frozen onions are better for cooking than fresh ones because they maintain their flavor throughout the preparation process more thoroughly.

However, there are some things to consider when thinking about freezing onions: how will they taste if I do it?

Will they be too strong, too mild, or just right? Will it save time and money?

For a little more reassurance on what to expect from your onions when you freeze them, continue reading.

Let’s Begin Our Guide!


Freezing Onions – Preparations

First, you should consider how long it takes for your particular onion to go bad so that you can properly prepare it for the freezer bags.

This is a good rule of thumb to remember in general, when it comes to food.In most cases, the fresh caramelized onions from your local grocery store are going to last about a week, maybe longer if they are not harvested from the field.

If you have an overabundance of fresh onions in your kitchen, however, you might want to think about prepping them for long-term storage.

Unfortunately, this is not the only thing you need to be thinking about.

side view basket full red onions wooden background

Cutting Onions for Freezing

Remember this – when you cut an onion, its shelf life gets reduced in half!

The logic behind this statement is as follows: when you cut an onion, its cellular structure opens up and releases a sulfur compound called propanediol-S-oxide.

This is the same compound that gives you those big, puffy tears after a good cry.In short, that means that the more you cut an onion, the faster it will go bad. How do you stop this reaction?

You simply cook your onions by whatever means necessary!In the case of freezing, this means that you should prepare your onions before putting them in the freezer.

Just cut off any parts of the onion that might be bad and then cook it however you desire.But it doesn’t mean you can’t freeze them without cooking as well. Read on.

top view white onion wooden kitchen board with knife with red onions isolated white surface

Freezing Onions – Raw Preparation

The easiest way to freeze onions is to simply grab them off the shelf and put them into a container in the freezer.

This is mostly suitable for those that do not have a large demand for onions, as it does lower the quality of their onions.

However, if this is fine with you, chop the onion up and store it in an airtight container for later use.

You can also freeze whole onions or chop them first. You can do this with the intent of using them later to make soups, stews, or casseroles.

Freezing Diced Onions:

First, dice up your onions and put them to the side.Next, heat a pot of water on the stove and wait for it to come to a boil.

Place your diced onions in a heat-resistant bowl and place it on top of the pot, making sure that the water does not touch the onions.

Constantly stir the boiling water until you see your onions turn a light brown color, anywhere from 5-10 minutes.

At this point, you can take out your diced onions and place them in an airtight container for later use.

Remembering How to Freeze Onions

Freezing onions is easy. The best way to remember how to freeze onions is to utilize the same storage techniques for other vegetables.

Onions should be wrapped in aluminum foil or placed inside an airtight freezer bag to avoid dehydrating.

Onions can also be frozen with other foods, like carrots and celery, which are typically more flavorful once they’re sautéed.

Freezing onions with garlic is also a good idea since the garlic will add flavor to your onion while the onion helps keep the garlic from burning too quickly when you cook it.

Now let’s resolve the frequently asked questions about the procedures of how to freeze onions.

top view vegetables as different types onion garlic wooden background with copy space

Is It Ok to Freeze Raw Onions?

The answer is yes, you can freeze them raw. But they do not taste as good as cooked ones. So, you can consider it as a great way to save the time of cooking beforehand.

Does Freezing Onions Ruin Them?

Yes, but onions are still safe to eat after being frozen. Onions are very low in acidity which makes them an ideal environment for harmful bacteria growth.

Onions should only be frozen for three months to preserve the greatest amount of flavor and nutrition.

How Long Do Onions Last in the Freezer?

It depends on how you freeze them. Frozen onions can last for two to four months with perfect onion odor, but they could turn brown and lose their flavor if you leave them in the freezer for too long.

How Do You Store Chopped Onions in the Freezer?

Freezing chopped onions is easy. If you are going to store chopped or sliced onions in the freezer, it is recommended to make some necessary preparations.

First, slice them and then cook them in a little oil or butter, depending on the recipe.

Once they cool down, place them in freezer bags and store them in your freezer.

What Is the Best Way to Freeze Raw Onions?

I prefer diced onions, but there are different ways to freeze raw onions. You can always do it all by yourself with some plastic bags and bottles.

But you need to make sure that the onions are completely dry before you put them in the freezer.

Also, remember to label any bag with the date so that you won’t forget when you stored them in the freezer.

Are Onions Good After Being Frozen?

Yes, onions are great after being frozen. They can last for months and they can be used in most dishes that require onions.

However, you need to remember that the texture and flavor of onions might suffer after freezing, which is why you need to pay attention to how they were frozen and cooked before storing them.

Are Frozen Chopped Onions Any Good?

Some people would say that frozen chopped onion is good, but it is not as good as fresh ones.

On the other hand, they might be a better option if you don’t have fresh onions in the fridge or just want to save some time.

Even though it’s good, remember that they are not the same as fresh chopped onion.

Can You Freeze Onions for Later Use?

Yes, you can freeze onions for later use. You can also find handy tips on how to preserve them in the freezer.

For example, you can keep your caramelized onions in the freezer for up to 6 months.

However, you need to know that onions can lose their flavor when they’re kept inside your freezer for too long.

How Do You Freeze Chopped Onions Without Them Sticking Together?

If you are wondering how to freeze chopped onions without them sticking, then there are some simple tricks that can help you.

First, make sure that the chopped onion is completely dry.

Then, place them on a baking sheet and put it in the freezer for about an hour.

After that, you can transfer them to a bag or bottle without worrying about them sticking together.

fresh golden onions isolated white

Is It Better to Freeze Onions Raw or Cooked?

You can do both but it is better to freeze onions raw, be it yellow onions or purple ones.

Onions that are cooked lose flavor and nutrition during the process of cooking, which means you can’t enjoy them as much.

Plus, you can’t do anything with them but use them in cooked dishes. It’s also better to freeze sliced onions.

How Long Can You Freeze Sauteed Onions?

It depends on how you have prepared them. If they are solid, then you can freeze them for up to three months. Otherwise, frozen onions won’t be as good as the real ones.

Should I Thaw Frozen Onions Before Cooking?

No, you should not thaw frozen onions before cooking. Onions are always better when they are used in their frozen state.

If you thaw frozen onions before cooking, they will lose most of their flavor and won’t be as tasty as before.

Should I Thaw Frozen Onions Before Cooking?

No, you should not thaw frozen onions before cooking. Onions are always better when they are used in their frozen state.

If you thaw frozen onions before cooking, they will lose most of their flavor and won’t be as tasty as previously.

How Do You Store Fried Onions in the Freezer?

First, dice the onions and then cook them until they are soft or brown depending on your recipe.

After that, put them in a plastic bottle or bag and put them in the freezer. It’s best to use frozen onions within a few months. Otherwise, they will lose their taste.

How Long Can You Freeze Fried Onions?

You can freeze fried onions as long as you want. They will still be good and tasty when you use them in your dishes.

However, if you ever need to use them later, make sure to fry them for a little bit before using them in whatever dish you.

Can You Buy Frozen Onions?

Yes, you can buy frozen onions in a lot of grocery stores. They are perfectly good and they can be used in whatever dish you want.

If you prefer to eat them instead of using them for cooking, then you can also buy frozen onions and use them as a side dish.

Can Purple Onions Be Frozen?

Yes, purple onions can be frozen. However, make sure that they are chopped before you freeze them.

It’s best to put them in a freezer bag or container. They will stay good in your freezer for up to 6 months.

top view female hands cutting yellow onion with knife with red onions isolated wooden wall

How Do You Freeze Cooked Onions?

First, boil the onions until they are completely cooked. Then, place them in a freezer bag or container to freeze them.

You can use them later on in any dish that calls for onions. It’s best to use them within a few months, or else they might lose their flavor and nutrition.


To conclude, yes, you can freeze onion! They save time and money. To get the best results, it’s best to freeze them raw and without frying them before and I would suggest to freeze sliced onions.

This way, you can use them later in any dish you want without changing the taste at all. It’s also good to use frozen onions within a few months, or else they might lose their flavor and nutrition.

Frozen onions are perfectly good to be used in any dish.

Plus, some simple tricks can help you freeze them without worrying about them sticking together or losing flavor. You can also store fried onions in your freezer for as long as you want.

It’s best to use them within a few months, however, or else they will lose their taste.

If you freeze purple onions, make sure to chop them in small pieces before putting them in your freezer bag or container. It will help you to use them later on.

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