Pie crust: Mix flour and salt. Cut in shortening until the mixture resembles small peas. Combine the remaining crust ingredients and stir into the shortening and flour. Let stand a few minutes. Roll out dough on a floured board. (Makes six 9-inch pie shells; you need a bottom and top crust for this pie.)
Preheat oven to 425 degrees F.
Toss apple slices gently with sugar, flour, cinnamon and lemon juice. Spoon into the unbaked pie shell. Top with the top crust, folding its edge under the edge of the bottom crust. Crimp to seal. Bake for 40 to 50 minutes, or until the crust is golden brown.