Caramel Apple Pie

7 cups of Tart Apples, peeled, cored and sliced
1 tsp of Lemon Juice
Zest and Juice of Half of a Small Orange
¾ cup of Walnuts, chopped
1/3 cup of Brown Sugar
¼ cup of Granulated Sugar
1 Tbsp of Corn Starch
¼ cup of Caramel Sauce (I have a recipe for that too!)
2 tsp of Ground Cinnamon
1 9” Unbaked Pie Crust

For the Streusel Topping,
¾ cup of All Purpose Flour
2/3 cup of chopped Walnuts
¼ cup of Granulated Sugar
6 Tbsp of Cold Butter
Extra Caramel Sauce for Drizzling over the top