Expiration & Storage Tips
When does corn muffin mix expire?
Unopened, a bag of corn muffin mix can last up to a year from the print date on the package if stored correctly. Once opened, it should be used within three months or refrigerated to extend its shelf life. If you've made the mix into batter but haven't baked it, you can store it in the refrigerator for up to two days. If you have frozen corn muffin mix, you can store it for up to a year in a well-sealed bag, though its quality might start to degrade after four months.
How do you tell if corn muffin mix is bad?
If the corn muffin mix has gone bad, there will be a few telltale signs. If there are any signs of insects or mold, or if the mix has an unusual smell or discoloration, it should be discarded. If the mix has been stored in a damp environment or has been exposed to extreme temperatures, it might clump together and become hard due to the moisture -- this is another sign that it has gone bad.
Tips for storing corn muffin mix to extend shelf life
• Store the corn muffin mix in a cool, dry place away from sunlight.
• Once opened, the mix should be sealed tightly in an airtight container or tightly-wrapped plastic bag to prevent moisture ingress and extend its shelf life.
• If you make the mix into batter but don't bake it immediately, cover it tightly and refrigerate. Use it up within a day or two.
• You can freeze corn muffin mix to extend its life. To use it, let it thaw at room temperature, then use it as you would fresh mix.