Lasagna noodles layered with béchamel, a ricotta and mozzarella filling and sautéed spinach, mushrooms and garlic, then baked until golden.
Use a store-bought béchamel or your own homemade white sauce. The lasagna noodles go into the dish already cooked al dente.
Find it online: https://www.receipster.com/spinach-mushroom-white-lasagna-2/