TSA says you can:
http://www.tsa.gov/travelers/airtravel/holiday.shtm
Note: You can bring pies and cakes through the security checkpoint, but please be advised that they are subject to additional screening.
http://blog.tsa.gov/2011/11/good-gra...a-holiday.html
Foods: Pies are permitted, but they are subject to additional screening if our officers see any anomalies. (Additional screening of pies does not include our officers tasting the pie, no matter what they tell you…) Cakes, bread, donuts, turkeys, etc. are all permitted.
On the other hand, a quick google search shows that frozen foods have been confiscated before.
Upshot: give it a try but expect the process to be slow and that there is a real possibility you'll have to toss it.
ETA: also, given that itin, there is no way the pie will still be frozen by the time you get there - have whoever is waiting for you bring a cooler with ice to put it in.