If you're a fan of spinach and mushrooms, this lasagna recipe is for you! Sautéed spinach and mushrooms are combined with a creamy béchamel sauce and layered with lasagna noodles and cheese. The result is a rich and flavorful lasagna that is both satisfying and nutritious. This recipe is perfect for vegetarians and can easily be made vegan by using dairy-free cheese and plant-based milk in the béchamel sauce.