Every zucchini plant overproduces. Freeze-drying turns a mountain of it into a bag that weighs almost nothing, since it is about 95% water.
Shredded zucchini is the most useful form. Weigh the fresh shreds before drying and write the weight on the bag; when you bake, rehydrate back to that weight and squeeze out the excess as you would with fresh.
Prep and loading
- Wash and trim. Shred, or slice ¼ inch thick.
- No blanching needed for shreds you will bake with; blanch slices 1 minute if you want them for soups.
- Spread shreds loosely, slices in a single layer.
- Season slices with salt and spices for chips.
How to tell it’s done
- Shreds are crisp and fluffy; slices snap.
Not sure? The weight check compares two weighings and the expected dry weight for zucchini.
Problems and fixes
Zucchini bread came out wet
Too much water when rehydrating. Rehydrate to the fresh weight on the bag, then squeeze in a towel like fresh zucchini.
Rehydrating and storing
Rehydrate: Shreds: soak, squeeze, use in baking. Slices: add to soups. By weight, 100 g of dried zucchini takes back about 1840 g of water to return to fresh weight; the rehydration calculator does any amount.
Store: Mylar with an oxygen absorber. Label the fresh weight on bags of shreds.
Ways to use it
- Zucchini bread and muffins
- Chips
- Soups and sauces
How much fits per batch
At a normal single layer, zucchini load at roughly 2 lb of fresh food per square foot of tray. That works out to:
| Machine | Fresh per batch | Dried per batch |
|---|---|---|
| Harvest Right Countertop 360 | 5.0 lb | 4.1 oz |
| Harvest Right Small | 6.0 lb | 5.0 oz |
| Harvest Right Medium | 9.4 lb | 7.7 oz |
| Harvest Right Large | 15.4 lb | 12.7 oz |
| Harvest Right X-Large | 31.3 lb | 1.61 lb |
Sources
- USDA FoodData Central: squash, summer, zucchini, raw (water content)
- Utah State University Extension: Can I Freeze-Dry That? (2026)
- Penn State Extension: Let’s Preserve: Freeze-Drying
- National Center for Home Food Preservation: freezing (blanching times)
- Iowa State University Extension AnswerLine: Preserving by home freeze drying
Water content rounded from USDA FoodData Central (squash, summer, zucchini, raw). Cycle times are typical ranges at default settings; thickness, load and your room change them. How we put these together.