Macaroni pie is a Scottish delicacy that consists of a crisp, crumbly pastry crust that's filled with macaroni and cheese. This dairy-free version recreates it perfectly, from the crust to the gooey, cheesy mac and cheese filling. There's something otherworldly about the way these things come together, so much that you'll probably be left speechless when you take your first bite. You can make one large pie for this recipe or several small ones, if you're looking to make a shareable appetizer.