This tofu version of a shepherd's pie is certainly not very traditional, but this recipe still makes for a hearty meal. This Shepherd's Pie is a casserole combining a tofu saute, mashed potatoes, and mushroom gravy. If you perform the 3 steps concurrently, you will shorten the preparation time. You should start the freeze-thaw tofu procedure the day before you expect to make the casserole. Prep time does not include thawing time for tofu. I like it even better the second day.From the Moosewood Collective.