The universe of lasagna is huge and varied. This layered pasta dish can be a classic meat and cheese, a vegetarian roasted vegetable, or even a dessert lasagna. Lasagna alla mozzarella, which includes fresh mozzarella and luxurious besciamella white sauce, is simple to put together and also quick to cook if you use "Oven-ready" Sheets of lasagna that don't need to be boiled before assembling and baking.