For the zucchini-tomato vegetables, wash all the ingredients and cut them into thin slices. Coat a fireproof casserole dish with olive oil and layer in the vegetables in order.
First zucchini, then 2/3 tomatoes, then 2/3 onion and finally basil, oregano salt and pepper. Alternate the remaining zucchini, tomatoes and patisson so it looks nice.
Mozzarella with a little olive oil, salt and pepper and bake at 160 ° C for about 30 minutes. For a nice color, activate the grill function for another 5-10 minutes.