For freezing shredded zucchini, go ahead and shred using a box grater or food processor, and proceed directly to step nine
For freezing sliced zucchini, slice into 1/4-1/3 inch thick rounds
Heat a pot of water to boiling
When water comes to a boil, prepare a large bowl of ice water
Working in batches, blanch zucchini by boiling in hot water for 1 minute, then transferring to ice water bath, stirring around to cool quickly
Lift from ice water to colander to drain
Mark freezer bags with date, and for shredded zucchini or any zucchini you intend to use in recipes that need a specific, measured quantity (i.e. zucchini bread), mark the quantity. You may want to look at your commonly used recipes to use as a reference. A common quantity of shredded zucchini used in a recipe is 1 1/12 or 2 cups.
Pack zucchini in prepared bag, and seal, begin sure to remove any extra air from bag as you do so
Lay bags of zucchini on a flat baknig tray, and place in freezer until frozen, then remove from tray to stack and store in your freezer