Question: how long to cook 2 stouffer lasagna?
Answer:  Preheat to 400°F.  Remove aluminum lid. Bend lid slightly then place lid on tray so it is elevated over lasagna.  Place tray on baking sheet, center rack. Cook Frozen: 1 HOUR 40 MINUTES (Thawed*: 55 MINUTES)  Remove lid last 5 minutes.  Carefully remove from oven. Let stand 15 minutes.