Created by Mikekey on July 11, 2015
Step 1: Place potatoes in a 3-quart pan. Cover with water; add salt. Bring to a boil; cook until fork-tender - 12 to 15 minutes. Drain and mash. Stir in 2 tablespoons butter, granulated sugar and ginger. Cool 25 minutes.
Step 2: Preheat oven to 425 F. Coat 8-inch deep dish pie plate with nonstick cooking spray.
Step 3: Stir flour into potato mixture, forming a soft dough. Turn out onto floured surface; form into a round. Divide in half. Place one half between 2 sheets of plastic wrap and roll into an 11-inch circle, about 1/4-inch thick. Remove top sheet of plastic; invert into prepared pie plate. Add apples.
Step 4: Roll out remaining half of dough and cover pie. Crimp edges of dough together; make 4 slits in top. Bake until lightly browned - about 25 minutes.
Step 5: Melt remaining 2 tablespoons butter with brown sugar.
Step 6: Remove pie from oven. Cut a 2-inch circle in center of pastry. Remove circle; pour in brown sugar mixture. Replace circle and return pie to oven. Bake 20 minutes more.
Step 7: Cool slightly before cutting and serving.