Rinse zucchini well and trim off the ends. No need to peel unless the skin is very tough.
Dice into ½-inch cubes for soups and casseroles, or shred on the large holes of a box grater and squeeze out excess liquid.
Spread zucchini evenly in a single layer on dehydrator trays (or parchment-lined baking sheets for the oven).
Dehydrate at 125°F for 6–10 hours, depending on the cut and humidity, until crisp and brittle with no moisture inside.
Let zucchini cool completely before sealing in airtight jars or vacuum bags. Label with the date and store in a cool, dark pantry.