Spread zucchini shreds out on a towel. Place another towel over the top of the shreds and press out excess water.
Add zucchini shreds, red onion, feta cheese, panko breadcrumbs, and eggs to a bowl and stir to combine.
Compress about ¼ cup of the zucchini mixture in your hands to form a small patty. It does not need to be flat at this point.
Spread a thin layer of olive oil in the bottom of a frying pan over medium heat.
Add zucchini patties to the pan and cook for about 2 minutes on each side. The patties are very delicate. Try to turn only once.
Remove to a paper plate lined with paper towels and cool for about 5 minutes. Cakes will firm more as they cool.
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Notes
See step-by-step pictures, serving ideas, and more above!Storage:Store leftover zucchini cakes in an airtight container in the refrigerator for 3-5 days. When you're ready to enjoy them, reheat them in the oven or on a skillet to bring back some of their crispiness.