You could also leave one end of the bag open. [4] X Research source
This will also make the zucchini easier to cook after it’s been frozen. [9] X Research source
Normally, you would salt the boiling water when blanching vegetables. However, don’t add salt when blanching before freezing because it absorbs into the vegetable’s skin and causes mushiness. [11] X Research source
For a drainage lining, you could also use a silicon mat or a sheet of parchment paper.
Label and date your bags and containers to make storage more convenient. [15] X Research source
If you’re in a rush, you could also place the freezer bag full of frozen zucchini in a bowl of warm water for 10 minutes, or until the zucchini feels soft. [19] X Research source