01 -
Grate the zucchini and squeeze firmly in a clean kitchen towel to remove excess moisture.
02 -
In a medium bowl, combine the drained zucchini, eggs, flour, Parmesan, mozzarella, onion, salt, and pepper. Stir until well blended.
03 -
Warm the vegetable oil in a large non-stick skillet over medium-high heat until shimmering.
04 -
Working in batches, drop heaping tablespoonfuls of the mixture into the skillet and flatten slightly. Fry until golden brown and crisp, about 2 minutes per side.
05 -
Transfer to a paper-towel-lined plate briefly, then serve warm.