Crumb Topping stir together:
In a large mixing bowl stir together sugar, flour, cinnamon and salt.
Add apple slices and gently toss till coated.
Transfer apple mixture to the pie dough lined pie dish.
Make Crumb topping:
Using a pastry blender, (or 2 knives) cut in ½ c. butter till the topping mixture resembles coarse crumbs.
Sprinkle over pie.
To prevent over-browning, cover edge of pie with foil.
Bake in a 375 degree oven for 25 minutes.
Remove foil.
Bake for 25-30 minutes more or till top is golden.
Remove from oven; sprinkle pie with pecans, then drizzle with caramel topping.
Cool on a wire rack. Serve with vanilla ice cream.