What are you using for the crust? Crisco? Because if it's dairy-free, you could use that inside the pie. Maybe use the butter flavored stuff?
Another way to go: I had to go dairy and soy-free for a few months while BFing DD, and I made pie crusts with lard (it works so well for sweet pies, you would never believe). I just put a little oil on the fruit to keep the inside moist (olive oil -- again, really great in sweet food). (Crisco contains soy, and earth balance is either soy or dairy based -- I think there's one that's neither soy nor dairy, but I doubt you could bake with it!

).
Good luck!