Peel the zucchini and cut them into slices. Then saute each of them for a few min. in a little olive oil. In another container, saute the finely chopped onions, eggplants, peppers and potatoes.
Season this stuffing with the spices and take it off the stove. In a suitable oven dish, arrange a layer of zucchini, distribute stuffing on top. Repeat this process and finish off with a final layer of zucchini only. Pour the tomato paste over everything.
Put the dish in a preheated oven. Once the liquid evaporates, the dish is ready. Right before serving, sprinkle with chopped dill and parsley. Optionally, you can pour on yoghurt as well.