Amount
Ingredient
Preparation





---

----------------------------pie----------------------------



1
each
pie shell

9-inch deep-dish



1
cup
sour cream





1
large
egg

lightly beaten



2
teaspoons
vanilla extract

pure



3/4
cup
sugar





1/8
teaspoon
salt





1/4
cup
flour

all-purpose



2
pounds
granny smith apples

peeled, cored, and thinly sliced





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--------------------------topping--------------------------



1/3
cup
flour

all-purpose



1/4
cup
sugar





1/4
cup
brown sugar, light

packed



2 1/2
teaspoons
cinnamon, ground





3/4
cup
walnuts

chopped



6
tablespoons
butter

unsalted, chilled and cut into pieces

 In large bowl, combine sour cream, egg, vanilla, sugar, salt, and flour, stirring until well blended.

Stir in apples.  Pour into unbaked pastry shell.

Bake at 425 degrees for 1 minutes.

Reduce heat to 35 and bake an additional 3 minutes.

TOPPING: Combine all topping ingredients, blending until mixture resembles coarse meal.

Spoon topping over pie and bake at 35 minutes for an additional 15 to 2 minutes, or until filling is bubbly.