Prepare rice in boiling salted water according to package instructions. Peel and chop the shallot and garlic. Heat oil in a pot. Sauté shallot and garlic for about 2 minutes. Add tomatoes and 25 ml water.
Season with salt, pepper, sugar and herbs. Bring to the boil and simmer for about 10 minutes. Flavour again, take off. Drain the rice and mix into the tomato sauce
Wash and clean the zucchini and cut lengthwise into 6 slices. Brush an ovenproof casserole dish (11 x 20 cm) with some oil. Place 2 zucchini slices side by side on the bottom of the dish. Add 1/3 of the rice-tomato mixture. Place 2 slices of courgettes on top and again add 1/3 of the rice-tomato mixture.
Repeat this procedure once again. Drain mozzarella well and cut into slices. Cover rice lasagne with it. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for 15-18 minutes. Take out, garnish with herbs and serve