Vegetarian Lasagna
["4 to 5 c. spaghetti sauce", "8 oz. lasagna noodles", "1 lb. Ricotta cheese", "12 oz. Mozzarella cheese, shredded", "1 c. Parmesan cheese", "1 lb. ground beef (optional)"]
["In a 13 x 9 x 2-inch Pyrex dish, spread 1 cup of sauce.", "Layer noodles and cheeses.", "Repeat.", "Place remaining noodles on top. Add remaining sauce, then cheeses.", "Leave uncovered and bake at 350\u00b0 for 45 to 50 minutes or until brown and bubbling.", "Let lasagna sit for 10 to 15 minutes and then cut into squares."]
["spaghetti sauce", "lasagna noodles", "Ricotta cheese", "Mozzarella cheese", "Parmesan cheese", "ground beef"]