Preheat the oven to 200 ° C. Wash and clean the zucchini and cut into thin slices without peeling. Remove the stalks from the tomatoes. Cut the tomatoes into slices. Drain the mozzarella and cut into thin slices. Wash the basil and tear off the leaves.
Rub a flat baking dish with garlic. Layer the zucchini, tomatoes and mozzarella in the pan and sprinkle the basil between them. Sprinkle with salt and pepper and drizzle with oil.