Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1 3/4  cups          Sifted all purpose flour
     1/4  cup           Sugar
   1      teaspoon      Ground cinnamon
     1/2  teaspoon      Salt
     2/3  cup           Butter
     1/4  cup           Water -- -Filling:
   1 1/2  cups          Sour cream
   1                    Egg
   2      teaspoons     Vanilla
   1      cup           Sugar
     1/2  teaspoon      Salt
     1/4  cup           All purpose flour
   2 1/2  pounds        Mcintosh apples -- -Topping:
     1/2  cup           Butter
     1/2  cup           Flour
     1/3  cup           Sugar
     1/3  cup           Firmly packed lt brown -- sugar
   3      teaspoons     Cinnamon
     1/4  teaspoon      Salt
   1      cup           Walnuts

Preparation:

Combine flour, sugar, cinnamon and salt in a large bow. Cut in butter with pastry blender until mix has the consistency of coarse meal. Sprinkle in just enough water to moisten dough. make into ball. Preheat oven to very hot 450. Roll out dough on a lightly floured surface to a 12 inch round; fit into a 10 inch pie plate. Turn under over hanging pastry and flute to make a stand up rim. Refrigerate until ready to fill.... Now here is where I get lazy. I don't do this. I buy the ready made crust and sprinkle it with cinnamon sugar... Beat egg slightly in a large bowl.. Stir in sour cream, sugar, flour, vanilla and salt until smooth. Add sliced apples stirring gently just to coat. ( paring and slicing apples into cream mix helps retard browning. Spoon filling into shell. Bake in preheated very hot oven 450 for 10 min. Lower heat to moderate 350 and bake 35 min longer. While pie bakes prepare topping. Remove pie from oven. Sprinkle topping evenly over filling. Return pie to oven. Bake at 350 for 15 min until lightly browned. This is a very large pie you could almost make two 8" pie