Traditional lasagna recipes, which include assorted meats, lasagna noodles, cheese and marinara, require approximately one hour of baking in a preheated 350 F oven. Recipes prepared with oven-ready lasagna noodles are sometimes baked at higher temperatures, up to 400 F, for less time, depending on the brand used.
Typical lasagna recipes, made in a 9- by-13-inch baking pan, serve approximately 12 to 14 people. Lasagna can be prepared in advance and refrigerated or frozen. Bake refrigerated lasagna for an additional 30 minutes. Defrost frozen lasagna in the refrigerator for 24 hours, and add 40 minutes to the original baking time. To prevent the top layer of cheese from burning, cover the pan with foil for the first 45 minutes, and then remove the foil to allow the cheese to brown evenly.