How to Make It
Preheat oven to 375°F. Stir together graham cracker crumbs, granulated sugar, powdered milk, and 1/2 teaspoon of the salt in a bowl; stir in butter until well blended and mixture holds its shape when pressed together. Press mixture into bottom and up sides of a 9-inch pie dish. Bake in preheated oven until lightly toasted, about 8 minutes. Remove from oven; let cool completely, about 30 minutes. (Do not turn off oven.)
Sprinkle 3/4 cup of the pecans over bottom of crust. Whisk together eggs, pumpkin, evaporated milk, brown sugar, pumpkin pie spice, and remaining 1/2 teaspoon salt in a bowl; pour over pecans in crust. Bake at 375°F until set, 50 to 55 minutes. Remove from oven; let cool completely, about 2 hours.
Spread whipped cream evenly over cooled pie; sprinkle with remaining 3/4 cup pecans. Slice and serve.