how long can a carrot cake stay out at a wedding?
Shares & Saves. Save. Carrot cake stays fresh for up to 2 days when stored in an airtight cake container or storage bag at room temperature, and up to 6 months in the freezer. The refrigerator gives the cake about 1 additional week of freshness when wrapped effectively.Frosted cakes keep best because icing acts as a seal to retain moisture.hares & Saves. Save. Carrot cake stays fresh for up to 2 days when stored in an airtight cake container or storage bag at room temperature, and up to 6 months in the freezer. The refrigerator gives the cake about 1 additional week of freshness when wrapped effectively.