It's very likely perfectly fine. The expiration dates on foods are general guidelines for the dates that commercial sales should be stopped. Foods can last for weeks or longer past expiration dates if kept in appropriate conditions.
Both you and your companion should have no ill effects.
If there is any problem with this, it will show up as nausea, vomiting, stomach cramps, diarrhea and perhaps fever - in the next several hours.
Under these circumstances it would be worth calling your doctor and doggy's vet.
Hope this helps put your mind at ease - and you have a good night .
Here's a valuable link for even more details about those hard to follow 'expiration' dates
(Thank you for your accept - you do not have to hit accept again)