Preheat the oven to 170 °C and grease a medium-sized baking dish or a 23 cm diameter springform pan.
Grate the zucchini in a food processor. Mix the zucchini grates with salt, put them in a colander or coarse sieve and let them stand for 15 minutes.
Then, using your fingers or a spoon, thoroughly squeeze out the liquid. Mix the ricotta, parmesan, green onions, garlic, dill and lemon zest.
Add the beaten eggs and the zucchini. Pour into the baking dish and bake for one hour.
Spread the feta on top and continue baking until the cheese is melted.
Serve at room temperature.