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Dehydrate Frozen Vegetables

Is your freezer getting full of packages of frozen veggies?  Makes some space by learning to dehydrate frozen vegetables for your short and long-term food storage.

piles of dehydrated frozen vegetables in a bucket

If you’ve recently gotten a dehydrator and just are too confused about what to start with, or are unsure about what is easy to do – try this. Dehydrate the frozen veggies you have in your freezer. It’s just about the easiest project to do that is practically no-fail.

Why Frozen Vegetables are a great beginning dehydrator project:

  • They do not have to be thawed!
  • The vegetables have already been blanched.
  • They’ve already been cut to the perfect dehydrating size.
  • They are ready to open and pop on a tray.
  • Helps make food shelf-stable for emergencies.
  • Often better nutritionally than fresh produce shipped from around the world
  • Can be less expensive than purchasing out-of-season fresh vegetables.

Vegetables in your grocer’s frozen food aisle are usually picked and flash-frozen immediately after the blanching process. They are often fresher than what you might purchase in the produce section.

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You also want to maintain a good rotating inventory of freezer stock. Sure, packaged veggies are already frozen, but they aren’t great insulators for an upcoming power outage due to a hurricane or city shut-off.

So let’s make use of those veggies, and get them rotating with this easy dehydrating project!

Bags of frozen vegetables being prepared for dehydrating.

Really. This is super easy to do. Just don’t do any of the heavy cream-based ‘sides’ or your own vegetables that may be heavy with butter or oil since dehydrating + oil isn’t food storage-friendly.

Quick Tip #1 for Dehydrating Frozen Vegetablesif your package has been in your freezer a bit, you’ll likely have some ice crystals. Simply whack your package on the counter a few times to loosen up those nuggets. The ice will quickly evaporate in the dehydrating process. I usually have a nonstick dehydrator sheet on the bottom of my machine just in case of any dripping.

Should I Thaw Before Dehydrating?

There is no need to defrost your vegetables.

Go ahead and get your dehydrator preheating to 145°F. We’ll dry them high for a couple of hours before settling into their normal temperature.

We’re trying to keep the dehydrator a proper temperature since it is full of frozen food, and help with the condensation that happens in the beginning.

However, if you’d like let your dehydrator run a little less, allow your veggies to thaw safely, THEN place them in a regular 125°F dehydrator, then follow the rest of the steps below.

How to Dehydrate Frozen Veggies

1. Set dehydrator to 125°F | 52°C

You can choose any temperature you want for this. Some prefer to go higher to help them defrost a little faster. The only issue with a too high temperature is case hardening with the peas. You don’t want them to dry so fast on the outside that the inside doesn’t dry.

2. Place on trays

No defrosting is necessary! Place your vegetables on your dehydrator trays.

3. Begin to check for dryness.

Some frozen vegetables dehydrate more quickly than others. If you are using a bulky mix of vegetables, you might want to pull out the fully dehydrated vegetables to let the bulky ones keep going.

Excalibur dehydrator trays of frozen vegetables in various stages of drying.

4. Condition

After you’re assured that your vegetables are dry, it’s important to condition them before storage to ensure they are equally dry throughout.

To condition: Place in a jar with an airtight lid. Shake it once a day for 5-7 days. Look for signs of moisture build-up, pieces sticking to the jar that won’t easily shake off, or clumping together that don’t break apart easily. Then store!

If you see signs of those things, throw them back into the dehydrator to dry more. If you see mold form, then toss it all.

5. Store.

Store in an airtight container for up two years, optimally. You may get longer, but the peak of freshness is about two years.

What do Dried Frozen Vegetables look like when Dry?

Dried vegetables on Excalibur dehydrator mesh tray
  • Green beans and other larger pieces will easily snap.
  • Corn will turn color
  • Peas will be completely shriveled.
  • You may see a white film on carrots and corn. Generally, this is starch from the vegetables and will not wipe off. If it does wipe off, that is mold and you need to toss the batch, clean your dehydrator and start again.

Dehydrate Frozen Peppers and Onions

One of the benefits of dehydrating frozen peppers and/or onions is that the smell is lessened significantly. Watch how to dry frozen peppers and how to create a pepper-onion spice blend from it.

Frozen peppers and onions before and after dehydrating

Dehydrate Frozen Corn

Drying frozen corn is so quick and easy, and you can amass quite a jar full in one easy go! I did an entire half-gallon jar from 9 12oz bags in about a day.

Before and after of Frozen corn dehydrated, on Cosori dehydrator trays.

How to Store

  1. Allow produce to fully cool;
  2. Place in an airtight container
  3. Condition for up to a week.
  4. Package for storage in an airtight container. That is all that is needed. However, you may want to vacuum seal them in your canning jar, or vacuum seal in bags, or use oxygen absorbers with mylar bags. Whichever way you decide, you can learn more about storing dehydrated foods here to make your choice. Do not use zipper top bags as storage solutions for more than a few days as they are not airtight.

TIP: See how I use my vacuum sealer to put my dehydrated products up for storage.

Glass clamp jar with water pouring into it to rehydrate the dehydrated vegetables indside

How to Rehydrate

To rehydrate dehydrated vegetables (also known as reconstitution) for a reason other than adding to a soup or stew:

  • Place dehydrated vegetables in a bowl of boiling water with enough volume to cover. It takes approximately 15-30 minutes.
  • Place in a bowl of water and leave in the refrigerator overnight.

How to Use Dehydrated Frozen Vegetables

  • Throw a few handfuls in a soup or stew. This will bulk up your vegetable quotient and you don’t have to prepare anything ahead of time. Make sure you add a little extra liquid to your stew for the dehydrated vegetables.
  • Throw some into ramen, rice dishes, meatloaf, and other savory dishes, just as with soups and stews. Make sure to rehydrate from the directions above, or add enough extra liquid into your dish to allow the produce to rehydrate during cooking;
  • Create Just Add Water gift jars with soups or stews to give to friends or keep in your pantry.
  • Grind it to make a vegetable powder that you can toss into meatloaf, casseroles, curries, burgers, smoothies, etc., to bulk up your vegetable intake. Much like making a green powder that I do here. You can even add the vegetable powder to sour cream or soft tofu, or yogurt to create a dipping sauce for
  • Use dehydrated corn to grind and make cornmeal.

Yield of Dehydrated Frozen Vegetables

Yield: 1 Cup frozen = 1/2 cup dried = 1/4 cup powdered

1 cup of frozen veg, 1/2 cup of dried veg, 1/4 cup of vegetable powder

Darcy’s Tips

  • If you have larger chunks of vegetables (like okra or lima beans), you can separate them ahead of time and give them their own tray. This will facilitate more even drying across the board.
  • It’s also a great idea to let your food dry for awhile and thaw, then cut larger pieces down (broccoli, cauliflower) to better sizes for drying faster and more efficiently.
  • Remember that vegetables’ yields are relative to their size, how they are prepared, etc. Cooking recipes usually don’t need exact measurements, so you can adjust as your taste prefers.

What Equipment Do I Need?

Here is the dehydrator that I use, though I’ve also used this one for years and loved it. I have this Food Saver for vacuum-sealing my jars and use wide-mouth and regular-mouth attachments. If you’re a book person and would love to have a book in your kitchen full of awesome ways to dehydrate all kinds of foods and make meals from them, check out the Ultimate Dehydrator Cookbook. You can find a list of other budget-friendly tools for your dehydrator here.

Frequently Asked Questions

Do I have to defrost frozen vegetables before dehydrating them?

No. They are ready to dry just as they are!

Can you put frozen vegetables in a dehydrator?

Yes, simply pour onto your dehydrator trays lined with mesh sheets (to prevent them falling through larger holes), and dry.

Can you dehydrate any frozen vegetable?

Yes! Larger pieces like broccoli or cauliflower may need to be cut down once or twice to ensure better drying. But you can dry anything from carrots to cauliflower rice to beans!

Give it a try

Go ahead. Give it a try. Go to your freezer, pull out those old, lumpy frozen vegetable bags, and do something with them! Are vegetables a little freezer burned? It’s okay. Fresh is always best, but in this instance, no one is ever going to know! And it’s SOOOOO easy!

More Easy Dehydrating Projects

While dehydrating is generally a very easy method, sometimes we need those fool-proof projects to help us with confidence! So I’ve created a list of 10 Easy Dehydrating Projects for you!

Dehydrating Basics & Journal book and ebook mockup
Jar of dried frozen vegetables next to a jar of dried vegetable powder on wooden background

Dehydrate Frozen Vegetables

Make dehydrating easy by dehydrating frozen vegetables to make them shelf-stable, and get more room in your freezer!
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Course: Preserved Food, Side Dish, Soup
Cuisine: American
Diet: Vegetarian
Prep Time: 1 minute
8 hours
Total Time: 8 hours 1 minute
Servings: 1
Calories: 181kcal



  • Frozen Vegetables


  • Open bag
  • Pour onto dehydrator trays (no defrosting necessary)
  • Dry at 125°F / 52°C until dry – approximately 6-10 hours until dry and plink when dropped
  • Condition
  • Store in airtight container


Darcy’s Tips

Rehydrate by soaking in water or placing in a simmering pot of stew, broth, or soup. They will need some time to rehydrate and cook, so let them simmer.
Vegetable Powder
  • Pour vegetables into a blender or coffee grinder
  • Pulse until a powder forms
  • Store in an airtight container for about six months
  • Use to supplement any meal with a little extra nutrition! Start with 1 Tablespoons (= 1 cup of fresh) and use as much a you’d like.
Nutrient information for dehydrated foods is based on fresh. Use 1/4 of the servicing size for the same nutrient information. Thus 1 Cup of fresh fruit has the same sugars as 1/4 dried.


Serving: 1Cup | Calories: 181kcal | Carbohydrates: 38g | Protein: 9g | Fat: 1g | Sodium: 133mg | Potassium: 600mg | Fiber: 11g

Nutritional information is an estimation only. Nutrient information for dehydrated foods is based on fresh. Use 1/4 of the servicing size for the same nutrient information. Thus 1 Cup of fresh fruit has the same sugars as 1/4 dried.

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  1. Avatar for Robin Dantzler Robin Dantzler says:

    Have you dried Dates or how can I put them up? I have lots of them. They are frozen. Help

    1. If they were already dry – they need nothing more. The sugars/additives used keep them dry. You can dry them more if you wish.

  2. Does this work for frozen fruits too, like berries?

  3. Going to try this with washed/dried/frozen whole Sungold cherry tomatos–need low-sodium dried tomatos for the wife to put on her salads!

  4. Avatar for Donna Wade Donna Wade says:

    I’m so excited to try this. My grandson is autistic and won’t eat veggies. So going to try making powder for his smoothies. Thank you for this idea!

  5. Avatar for Janet Nisbet Janet Nisbet says:

    I get a sweet smell while dehydrating frozen vegetables. Is that normal? I didn’t notice it while doing Kale and Spinach.

  6. What does “condition” mean (referring to step 4)?

    1. It’s in the post ” After you’re assured that your vegetables are dry, it’s important to condition them before storage to ensure they are equally dry throughout.

      To condition: Place in a jar with an airtight lid. Shake it once a day for 5-7 days. Look for signs of moisture build-up, pieces sticking to the jar that won’t easily shake off, or clumping together that don’t break apart easily. Then store!

      If you see signs of those things, throw them back into the dehydrator to dry more. If you see mold form, then toss it all.

  7. Avatar for Sue Harris Sue Harris says:

    Dear Darcy, I’m so excited to receive your emails. I’ve recently started dehydrating and really appreciate your guidance and tips.
    I can’t wait to do caramelised onions, they sound so delicious.
    Thank you very much, I’m very grateful.

  8. Avatar for Claudia Haviland Claudia Haviland says:

    Can you dehydrate frozen chopped spinach?

  9. Avatar for Janice Morton Janice Morton says:

    New to dehydrating food. The information is very helpful, Thank you.

  10. Avatar for Jean Parsons Jean Parsons says:

    I want to dehydrate some of my frozen vegetables. But I don’t have a vacuum sealer. Are silica gel moisture absorbers alright to use and how long will they keep the food safe? I will be using pint canning jars.

    1. You don’t need either of them. Dry, condition, and store in an airtight container. That’s it. Moisture absorbers aren’t needed unless you live in a humid environment and will be getting in and out of the jar. Dehydrated products have a ‘conservative’ storage of a year, but you’ll likely get much longer. PLease read this information on how to store dehydrated products. https://www.thepurposefulpantry.com/how-to-store-dehydrated-foods/

  11. Can you rehydrate and use as a regular vegetable side dish for dinner or do they need to be in soups and stews?

    1. For most, they are best in another dish than on their own, and a matter of personal preference. Soyou can always test out a little as you finish it and see what you think.

    2. I have successfully dehydrated frozen veggies like green beans, & corn & then rehydrated(with broth for extra flavor) & cooked them like normal (with a little butter & a little of the broth I used to rehydrate) with no issues. In fact, one pleasant surprise was that corn that had been dehydrated first seemed easier to digest once cooked!

  12. Great article. I’ve pulled my dehydrators out but needed some tips. This really helps. I do usually use my jars with the vacuum sealer, but plan to use food saver bags this time. My concern is, it isn’t Mylar. I want to keep the product for up to two years, but I’m not sure if the food saver bags will be sufficient. What do you think?

    1. Foodsaver bags aren’t the best option for dehydrated foods. Dehydrated foods can have sharp edges (especially vegetables), which may pierce the plastic and cause air leaks. Mylar is suggested as the best long-term storage solution with O2 absorbers (or the mylar bags that are good for vacuum sealing that have the rough interior compared to a smooth interior).

  13. Avatar for Jeanne Giacalone Jeanne Giacalone says:

    Such a great idea and article. Can’t believe I’ve never thought of doing this, but sure can’t wait to start. Thanks so much for all your great advice, and the best dehydrating group on Facebook. You’ve made my day.

  14. Hi Darcy. What a great article! Thanks for the info and idea! Following all the steps you recommend for storing, what would be your estimated guess of longest amount of time these could be stored and remain consumable? Thanks again!

    1. Most foods, properly dried, conditioned and stored are safe up to about two years (and some people do up to five). Powders are generally good up to a year.

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