Filling:
6 cups sliced baking apples
2/3 cup sugar
2 tablespoons flour
1 teaspoon cinnamon
Stir together and press into an unbaked pie shell.
Topping:
1/2 cup brown sugar
1 cup flour
1/2 cup butter
In a medium bowl, mix brown sugar with flour. Cut in butter until pea-sized crumbs form. Spoon over the apples until the pie is evenly covered with topping. Gently pat into place.
Bake at 350 degrees for 1 hour. Topping and crust should be golden brown.