Lasagna should be cooked for at least 45 minutes and at a lowest temperature of 350 degrees Fahrenheit in an oven. The time and temperature depend on the type of lasagna and cooking method.
Lasagna is a type of pasta dish that includes multiple layers of cheese, meat or vegetables, and sauce. Homemade fresh lasagna can be cooked at 350 F for approximately 45 minutes. Thawed store-bought lasagna can be cooked at either 350-400 F for anywhere from 25-55 minutes. The time may be adjusted depending on how quickly the entire dish finishes.
Frozen store-bought lasagna can be cooked at either 350-400 F for anywhere from 45 minutes to 1 hour and 50 minutes.