STREUSEL:

1/3 c. sugar
1/4 c. brown sugar
1/2 c. plus 2 tbsp. flour
1 tsp. cinnamon
1 tsp. nutmeg
1/2 c. butter
1/2 c. walnuts, chopped
4 lg. Granny Smith apples
1 unbaked 10 inch pie shell
1 c. sugar
3 tbsp. flour
1/2 tsp. cinnamon
1 egg
1 c. whipping cream
1 tsp. vanilla

Mix first 6 ingredients. Add butter and mix until crumbly; don't overmix; should be dry. Add nuts. Peel, core and thinly slice apples (4 cups) into pie shell. Mix sugar, flour, and cinnamon. Beat egg and add the cream and vanilla. Add to the flour mixture; pour over apples. Bake for 20 minutes. Add streusel on top and bake for 40 minutes longer or until top puffs and is golden brown.