2 hours ago, JeanneCake said:
You could look at vegan pie crusts - they most likely use a vegan shortening/butter substitute or the one on the blog My Quiet Kitchen has one that is GF, DF and oil free. I looked at it a while ago when we had someone ask for a DF/GF fruit tart 😉 but then they decided against it so we didn't end up making it. (It uses almond flour if a nut allergy is an issue)
but op's issue is fat, and there's really no way that they have anything approximating a traditional pie crust that is also low in fat. it might be a vegan fat (e.g., almond flour), but it's still fat. i bet it's delicious - almond flour is tasty - but i've never had anything from anyone made with almond flour that ate like a traditional pie crust. i expect it's more akin to a chewy cookie or graham cracker crust in texture (which is not necessarily a complaint, all those are delicious, but they aren't really pie crusts in the sense of them here, i think).