Recipe-Ready Frozen Zucchini

By Andrea Chesman
Published on July 7, 2020
article image
by AdobeStock/Mikhaylovskiy

When it comes to zucchini, there are two types of gardeners: those who grow just one plant because they fear they’ll end up with too much squash, and those who grow extra plants in case one fails to produce. For the latter, the question is inevitably to preserve or not to preserve. You’ll never get a crisp pickled chip from zucchini because of the vegetable’s excessive water content. Instead, I stick with relishes that don’t suffer from a softer texture. But there’s a limit to how many jars of relish one household can consume in a year.

If your zucchini is overgrown and you’ve made plenty of relish, quarter those huge squash and discard the seeds. Then, grate the flesh, stuff it into bags, and freeze it. The freezing will break down the cells and cause it to exude its water when defrosted. Normal-sized zucchini (8 to 10 inches long) can be quartered, sliced, blanched, and frozen, or simply grated like the monsters. You’ll want to cut off the blossom end to remove the enzymes that will continue to ripen and mature the plant.


To freeze zucchini in chunks, I quarter it, and then slice it about 1/3 inch thick. I blanch the pieces in boiling water for 1 minute to set the color and texture. Next, I quickly cool them in ice water, drain, and dry on a thick towel. I work in 6-cup batches, which is what fits into a 1-quart bag (the frozen vegetable will lose some volume in the process), and I consider this the optimal amount to slip into a dish. I don’t blanch grated zucchini, because I don’t care if the freezing causes the zucchini to turn into mush, as it’s going to disappear into a cake.

Freezing zucchini does present certain challenges. Because it’s full of water, ice crystals will form around the pieces; for best quality, use frozen zucchini within four months. Also, the amount you freeze isn’t what you’ll end up with. I’ve done some math for you to help with planning.

  • 1 (8-to-10-inch) zucchini = 2-1/2 to 3 cups shredded, or 3-1/2 to 4 cups quartered and sliced
  • 6 cups shredded (fits into a 1-quart freezer bag) = 1-1/2 cups defrosted and well-drained
  • 6 cups quartered and sliced = 4 cups blanched (fits into a 1-quart freezer bag)
  • 4 cups blanched and frozen pieces = 3 cups defrosted

You must take into account the water that leaves the zucchini after it’s been frozen and defrosted. Thus, 6 cups of grated zucchini will reduce to only 1 1/2 cups defrosted and drained. For most recipes, I’ll then squeeze the zucchini until I’m left with only about 1 cup.

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