Pour 1/4 cup caramel topping into crust; sprinkle with 1/2 cup nuts. Beat milk, dry pudding mixes, pumpkin and spices with a whisk until blended. Stir in 1 1/2 cups whipped topping; spread mixture into crust. Refrigerate at least one hour. Before serving, spread pie with remaining whipped topping, drizzle with remaining caramel topping and sprinkle with remaining pecans if desired.
