*Farro is an ancient grain with a slightly nutty flavour and somewhat chewy texture. It contains gluten but has the lowest amount of all grains that contain gluten. I always use portabello mushrooms because they are more nutritious--they are one of the few vegetarian options for Vitamin D--and I chop them fairly coarsely. Click on
veg stock to learn how to make your own or just use store bought or water and stock cube(s). I like to serve mine in a pie shell. I just use store bought ones (watch out for lard in the ingredients) and follow the package instructions but obviously you can make your own pastry from scratch if you have the knack. If using pie shells, cook in advance and let cool a bit before assembling. They usually come in packages of two and this recipe should be good for at least two pies. This recipe can easily be made vegan by omitting the pie shell and using a vegan cheese and butter.