Hand pies are for crust lovers. If you enjoy the flaky, buttery crust of a pie more than the filling, then hand pies are for you.
They're also conveniently portable. Have you tried lugging a pie dish on public transportation, dodging people on the sidewalk so you can bring a pie to work to share with co-workers? It's not fun. Hand pies can easily fit into a container and thrown into a bag without worrying about spillage.
And if you're into the cute factor, they're tiny and bite-sized.
