Prepare the Zucchini: At least 3 hours before starting the recipe, prepare your zucchini. Slice the zucchinis using a mandoline set to 0.75 mm and place them in a colander lined with a cheese cloth. Sprinkle salt between the layers of zucchini slices, cover, and set the colander over a bowl. This process draws out excess water from the zucchini, making the lasagne less watery. You can also do this step the night before.
Preheat the Oven and Cook the Chicken Filling: When ready to prepare the lasagne, preheat your oven to 180°C. Heat olive oil in a non-stick pan and sauté the onions until translucent, about 5 minutes. Add the chicken mince and cook until browned all over. Stir in the garlic, Italian herbs, salt, pepper, wine, and cream, and cook for another 2 minutes. Set aside.
Prepare the White Sauce: In a small bowl, mix 100 ml of milk with the cornflour until smooth. Bring the remaining 500 ml of milk to a boil in a saucepan. Add salt, pepper, the cornflour mixture, and the parmesan rind (or grated parmesan). Let it simmer, stirring constantly, until the sauce thickens. Remove the parmesan rind once thickened and add the fresh basil. Use a stick blender to blend the basil into the sauce until smooth. Set aside.
Assemble the Lasagne: Twist the cheesecloth with the zucchini slices firmly to extract as much water as possible. Take a 30 cm x 20 cm baking dish and start layering:Lay 3 lasagne sheets on the bottom of the dish.Cover with half of the chicken mince.Add half of the zucchini slices.Top with half of the white sauce.Repeat the layers once more, finishing with the white sauce on top. Sprinkle the mozzarella over the final layer. Bake the Lasagne: Bake the lasagne in the preheated oven for 40 minutes. Remove from the oven, let it cool slightly, and enjoy!