The less familiar part is the hot-water crust. Regular pie dough spends its life being told to stay cold; this one works warm, with melted butter and hot water mixed straight into the flour. The dough turns soft, smooth, and cooperative, so it rolls without a fight, presses easily into the pan, and can be easily patched if it tears. Once baked, it is sturdy enough to hold all that gravy, with crisp edges and a rich, buttery flavor somewhere between pie crust and savory shortbread.
That clean slice starts before the pie goes into the oven. I let the filling cool before it meets the crust, then give the finished pie a little time to settle before slicing. The gravy thickens, the crust stays crisp, and the wedge stands up instead of spilling across the plate.
A dish like this needs a green companion. I serve it with a pile of green peas for color and a little sweetness — they could just as easily go inside the pie, but I like the contrast on the plate. If I want something cooler, a simple shaved salad does the job. No need to overdo it; the pie is the star.