How to Freeze Zucchini and How to Use It

Can you freeze zucchini?

bagged shredded zucchini
Pop shredded zucchini in freezer bags, suck out the air and toss in the freezer for another day.

Read more: How to Freeze Onions, Freeze Beets, Blanch & Freeze Peas and How to Freeze Green Beans.

Yes you can. But there are a couple of things to consider.

  1. Zucchinis are over 90% water by weight. That means whether you slice them, dice them or shred them, they will get soggy and limp when frozen. Do not expect zucchini slices to hold their shape when frozen. Cooking them so they won’t be mushy will require some skill! Luckily, frozen grated zucchini is great in baking, casseroles or mixed into rice, soups, spaghetti sauce, etc.
  2. The National Center for Home Food Preservation, (NCHFP) the most credible source for preserving produce, recommends blanching zucchini slices (3 minutes) and shredded zucchini (2 minutes) before freezing. Blanching destroys aging enzymes and helps preserve color and flavor for much longer than if you don’t blanch zucchini. Expect unblanched zucchini to be tasty for 3 months, while blanched zucchini will last 6-12 months.

Why I don’t Blanch Zucchini Even if its Recommended

If you’ve read any of my other articles on freezing vegetables you know I’m obsessed with blanching and will do so for all veggies. Zucchini are the one exception. Even though the NCHFP says to blanch, I choose not to blanch shredded zucchini. WHAT?! Yup, I freeze fresh shredded zucchini as is. Crazy right?! Here’s why. I use shredded zucchini mostly for baked goods or in soups or dishes where the zucchini is masked by other ingredients.  In other words, the flavor and color loss is not noticeable because zucchini is not the star of the show.

Knowing all this, here is how we freeze zucchini.

How to Freeze Zucchini

1.Use fresh, beautiful zucchini to freeze. Remember the quality of frozen food is only as good as the quality of the food you put into the freezer!

beautiful zucchini from garden
Fresh zucchini in the garden. Harvest before they get too big!

That said, you can use larger zucchini just try to keep it under 3 feet!

2. If seeds have started to develop in your zucchini, scoop out the core of the zucchini. Take out the seeds and the spongy center.

remove core from zucchini
Scoop out the spongy centre and seeds before shredding.

3. Shred zucchini using a grater or a food processor. Use the large holes to make large shreds, avoid making tiny shreds as these will turn into a soupy mess once frozen.

shred zucchini
Use a cheese grater or food processor to shred your zucchini.

4. Drain and squeeze out as much liquid as you can from the zucchini shreds. This will reduce the amount of water when thawing.

shredded zucchini draining
Drain excess liquid before freezing

5. Place pre-measured amounts in a freezer bag. Choose amounts that you’ll need for your favorite recipes. My lemon zucchini muffins require 1 cup and my chocolate zucchini loaf requires 3 cups.

bagged shredded zucchini
Suck all the extra air out of your freezer bags before sealing and freezing.

Use a straw inserted into a small opening in the zipper of the bag to suck out as much air as possible. And don’t forget to label your bag!

6. Place in freezer and use within 3-6 months. As noted above, if you want it to last even longer, blanch your zucchini.

grated yellow zucchini in pile on wax paper with 1 cup written in sharpie
Print Recipe
5 from 1 vote

How to Freeze Zucchini

Freeze fresh, shredded zucchini as is! Use shredded zucchini for baked goods or in soups or dishes.
Prep : 15 minutes
Author: Getty Stewart

Ingredients

  • fresh zucchini mid size to large are best for flavour (try to keep them under 3 ft!)

Instructions

  • Use fresh, beautiful zucchini to freeze. Remember the quality of frozen food is only as good as the quality of the food you put into the freezer!
  • If seeds have started to develop in your zucchini, scoop out the core of the zucchini. Take out the seeds and the spongy center.
  • Shred zucchini using a grater or a food processor. Use the large holes to make large shreds, avoid making tiny shreds as these will turn into a soupy mess once frozen.
  • Drain and squeeze out as much liquid as you can from the zucchini shreds. This will reduce the amount of water when thawing.
  • Place pre-measured amounts in a freezer bag. Choose amounts that you'll need for your favourite recipes. My lemon zucchini muffins require 1 cup and my chocolate zucchini loaf requires 3 cups.
  • Use a straw inserted into a small opening in the zipper of the bag to suck out as much air as possible. And don't forget to label your bag!
  • Place in freezer and use within 3-6 months. As noted above, if you want it to last even longer, blanch your zucchini.

Video

Notes

Unblanched zucchini will last in the freezer for about 3 months.
Blanch your zucchini to preserve colour and flavour for much longer. Blanched zucchini will last 6-12 months.
Using zucchini:
1 cup before freezing = 1 cup thawed and drained
Tried this recipe?Mention @GetGettyS or tag #GetGettyS
Course: freezing, Storing Vegetables
Keyword: freezing, how to freeze vegetables, zucchini

How to Use Frozen Shredded Zucchini

To Thaw or Not to Thaw

Thaw for baking, don’t thaw for cooking is a good rule of thumb.

If you’re making soup or spaghetti sauce, add frozen zucchini shreds towards the end of the cooking time. They do not need to be cooked for long, just long enough to heat through.

To thaw, simply place in fridge overnight or soak the bag of frozen zucchini in a bowl of warm water. Or, use the microwave on half power so it thaws but doesn’t cook.

To Drain or Not Drain

Sooo, here’s the thing. Most baking recipes that use zucchini rely on some of the moisture in the zucchini. But when zucchini freezes additional moisture builds up in the bag so when you thaw it, there is more moisture than the equivalent amount of fresh zucchini would have. Therefore, yes you should drain thawed, frozen zucchini – but you don’t need to wring it out completely. Hope that makes sense.

1 cup before freezing or 1 cup thawed and drained

This is another tricky one and one I haven’t been able to find a definitive answer to. Frozen zucchini takes up less volume than fresh zucchini. So even though you put 1 cup of fresh zucchini in the bag, it may come out as 3/4 cup or less once thawed. Should you add more frozen zucchini to make 1 cup? What do you you do? I typically do not add more zucchini and just use whatever I pre-measured and froze.

grated yellow zucchini on wax paper with 1 cup zucchini written in sharpie
Pre-measured grated zucchini ready to freeze.

My favourite zucchini baking recipes:

Sign up to get articles by Getty delivered to your inbox. You’ll get recipes, practical tips and great food information like this. Getty is a Professional Home Economist, speaker and writer putting good food on tables and agendas. She is the author of Manitoba’s best-selling Prairie Fruit Cookbook, Founder of Fruit Share, a mom and veggie gardener.

2 Comments

  1. What if, when you package 2 cups to freeze, you also weight it? Then you know how much water to remove when cooking. Just a thought.

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