Created by JostLori on August 7, 2015
Step 1: Preheat oven to 425°F. Lightly grease an 8-inch pie plate.
Step 2: Cook the potatoes in boiling salted water until tender, 12 to 15 minutes. Drain and mash.
Step 3: Add butter, sugar, and ginger and mix well. Stir in the flour to make a soft dough.
Step 4: On a lightly floured board, form the dough into a ball and divide in half. Roll half into a 8-inch-diameter circle and fit into the prepared pie plate. Arrange the apple slices by overlapping them in 2 concentric circles over the dough. Moisten the edges with cold water.
Step 5: Roll out the remaining dough into an 8-inch circle and place it on top of the apples. Press the edges together and flute them to make a standing edge. With a sharp knife, make 4 or 5 slits on top to allow steam to escape. Bake until crust is browned, 25 to 30 minutes.
Step 6: Remove from oven and cut a 2-inch circle in the top pastry to make a lid. Remove this carefully, add the butter and brown sugar, and replace the lid. Return to the oven and continue to bake until the butter and sugar have melted, about 5 minutes.
Step 7: Slice and serve immediately, with whipped cream, or a dusting of confectioners' sugar.