Wash the meat and dab dry. Heat 1 tablespoon of oil in a large, coated frying pan. Fry the escalopes in it for 4-5 minutes, turning them over in portions. In the meantime, peel garlic and dice finely.
Wash and clean the zucchini and cut them into slices about 0.5 cm thick. Wash the basil, dab dry and remove the leaves. Put 4 leaves aside, cut the rest finely. Season the meat with salt and pepper, remove and wrap in aluminium foil.
Heat 1 tablespoon of oil in a frying pan and fry the zucchini slices for about 3 minutes, turning them over. Add garlic 1 minute before the end of the cooking time, season with salt and pepper, remove. Add tomato sauce and vinegar and heat for about 3 minutes, season with salt, pepper and sugar.
Stir in finely chopped basil. Cut tomatoes into slices. Place the meat, zucchini and tomato slices in a greased casserole dish. Add tomato sauce. Cut the mozzarella into slices and spread over it.
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 10 minutes. Remove and garnish with remaining basil leaves.