Generally, cooked lasagna can be stored in the fridge for three to five days, as long as it's been cooled and refrigerated promptly. But, let's be real, who hasn't pushed the limits of food storage from time to time? The key is to make sure it's stored in a shallow, airtight container and kept at a consistent refrigerator temperature of 40°F (4°C) or below.
Now, you might be thinking, "What about the freezer? Can I just stash it in there and forget about it?" Well, yes and no. While freezing can extend the shelf life of lasagna, it's not a guarantee that it will remain safe to eat indefinitely. Freezer burn can set in, affecting the texture and flavor, making it unappetizing. But, if you do decide to freeze it, make sure to wrap it tightly in plastic wrap or aluminum foil and store it at 0°F (-18°C) or below.
