Squeeze the grated zucchini in a towel to remove as much water as possible.

Mix the zucchini with egg, flour, parmesan, and green onion into a batter.

Heat the olive oil in a skillet over medium heat.

Drop spoonfuls of batter into the pan and flatten into patties.

Fry for 3 minutes per side until golden and crisp.

Drain on paper towels and serve with a dollop of sour cream.