Filling: onion, garlic and carrots are finely chopped and sauté with a little water and olive oil. Add the zucchini, cut into small pieces and mix. Add the minced meat and fry, stirring often. Add the mushrooms, when tender add the peppers, chopped. Add at least 500 ml tomato juice. Insert and basil mixture and allow to boil for at least 10 minutes. White sauce: In a pan melt the butter and pulling it from the heat to cool slightly. Slowly add flour, stirring vigorously in one direction only. In the milk and add the egg is broken. When the flour is absorbed by the butter, slowly pour the milk while stirring. Put it on to boil and stir continuously. Must boil at least 5 minutes. Season with nutmeg. Lasagna: The bottom of the tray is covered with 1/3 of the white sauce. Arrange a layer of pastry and cover with half the stuffing. Again row peel and other parts of the filling (can be made and more lines). At the top is placed order peel and pour the rest of the white sauce. Bake in a pre-heated to 180-200 C oven for about 20-30 minutes. Five minutes before being pulled from the oven, sprinkle with grated cheese.