Due to (what I am assuming was) a miscommunication with my mother, who lives with us, about 3 lbs. of thawing beef chuck was left out overnight on our counter top. We don't have our heat on yet, so it was in the low 60's F, around 17*C all night long. When I smell the beef, it smells fine. It probably completely thawed to the core late last night, so it was sitting thawed on the counter top for about 5 - 8 hours. My gut reaction is to not waste... cook the heck out of it and use for spaghetti sauce or something. I don't want to kill my family, though. What would you do?