"Wow friends and family with this skillet lasagna, a modern take on the classic comfort-food casserole. With layers of homemade tomato sauce, lasagna noodles, ricotta, and spinach, every bite is oozing with flavor. Starting the cooking process in the skillet ensures the outer edges achieve maximum crispiness, and finishing it under the broiler allows the cheese to bubble and brown. Instead of cutting into squares, divide into four wedges, and serve with a green salad and hunks of crusty baguette. For a vegetarian version, replace the sausage in the sauce with sautéed eggplant or mushrooms...."