Wash zucchini and grate coarsely. Cut spring onions and peeled garlic into small pieces. Cut sage leaves into strips and fry in 1 tbsp olive oil. Add zucchini, onions and garlic, fry briefly and allow to drain in a colander.
Mix eggs and milk, season with salt and pepper and chop the feta.
Heat 1 tbsp. olive oil in a pan, mix sage zucchini mixture and feta cheese. Spread in the pan, pour eggs milk over and let thicken for 10 minutes over low heat.