FOOD STORAGE — HOW LONG CAN YOU KEEP...

• Keep frozen until ready to use.
• Once prepared, refrigerate leftover lasagna in a covered container for up to two days.
• Freezer time shown is for best quality only — foods kept constantly frozen at 0° F will keep safe indefinitely.
• Best By," "Best if Used By," and "Use By" dates on commercially packaged foods represent the manufacturer's estimate of how long the product will remain at peak quality — in most cases, the unopened lasagna will still be safe to consume after that date, as long as it has been stored properly and the package is not damaged.

Sources: For details about data sources used for food storage information, please click here.