Easy Apple Crumb Pie

9-inch pastry shell/pie crust unbaked, chilled
1 cup sifted flour
1/2 cup brown sugar, firmly packed
1/8 teaspoon salt
1/2 cup soft butter
6 cups peeled, cored, sliced apples
1/2 cup granulated sugar
1 teaspoon ground cinnamon
vanilla ice cream - optional

Combine flour, brown sugar, salt and butter; blend until crumbly then set aside.
Combine apples, granulated sugar and cinnamon; mix gently to coat apple slices.
Pack apple mixture into chilled crust. Sprinkle crumb topping over apples.
Bake in 375 degree oven until apples are tender, about 50 minutes.
Serve with vanilla ice cream