Preheat the oven to 190 degrees C. in a bowl mix apples, lemon juice, sugar, flour, cinnamon, allspice and salt. set aside.

For crumb topping, cut the butter into the flour using a pastry cutter, add the brown sugar, oats and salt. mix and set aside.

Add apples to prepared crust and top with the crumb topping. cover the edges of the crust with aluminum foil and bake for 25 minutes.

Remove the foil from the crust and place the pie back into the oven for another 30 minutes.

Before the final 5 minutes of the cooking time, sprinkle the chopped pecans on top of the pie and allow to finish baking.

Remove the pie from the oven and pour the caramel sauce all over the pie. allow to cool slightly before serving.