Can I substitute olive oil for butter/shortening in pie crust?
The trick to incorporating olive oil into your crust is to freeze it first until it's opaque and congealed, "like the consistency of slightly melted sorbet." From the recipe for an olive oil double crust; it has a "surprisingly neutral taste... [and by freezing it] helps the fat blend into the dough in little pockets, creating the flakiness you crave (Moskowitz, Vegan Pie in the Sky p. 39)"