Pre-cook the lasagne sheets in portions in boiling salted water for about 4 minutes. Carefully lift them out, place them on a damp cloth
Clean, wash and chop the zucchini. Peel and chop garlic and onion. Fry them both in hot oil. Fry the zucchini and herbs. Add tomatoes and juice, boil down for about 10 minutes. Drain the olives and artichokes, chop them finely and add them to the sauce. Season to taste
Heat the fat and sweat the flour in it. Stir in milk and stock, simmer for about 5 minutes. Season to taste
Put some vegetable sauce on each noodle plate and roll it up. Place in a casserole dish. Spread the rest of the vegetable sauce, béchamel sauce and cheese on top. Bake in a hot oven (electric cooker: 200 °C/ convection oven: 175 °C/gas: level 3) for about 35 minutes
Drink: mineral water