Sour Cream Apple Pie Recipe

one 9-inch unbaked pastry shell
6 tart apples, peeled, cored, sliced
3/4 cup sugar
1/3 cup all-purpose flour
1 teaspoon cinnamon
1/4 teaspoon nutmeg
1/4 cup butter
1/2 cup sour cream

Mix sugar, flour, cinnamon, nutmeg and butter together until crumbly. Arrange apples in pie shell; sprinkle first mixture over the apples. Spoon sour cream over the top. Bake for 25 minutes at 400, then reduce heat to 350 and bake apple pie 20 to 30 minutes longer.