Traditionally made with eggplant, my research tells me that you can use carrot, or what vegetables you have. Our family is not a huge fan of eggplant, so I opted to swap out the eggplant and replace it with carrot.
Grease a 30 x 30 x 5 cm baking dish with a little of the olive oil, and sprinkle half of the breadcrumbs over the base.
Place the potatoes, carrots, tomatoes and zucchini in alternate layers, sprinkling a little of the onion and garlic in between each layer, and seasoning each layer with salt, pepper and oregano mixture as you go, finishing with a final layer of zucchini.
Pour in the water and drizzle 1 tablespoon oil over the top layer of zucchini.
Sprinkle over the remaining breadcrumbs and drizzle over the remaining tablespoon of oil.