In a large mixing bowl, whisk together the instant vanilla pudding mix and milk until smooth.
Stir in the pumpkin puree, cinnamon, nutmeg, ginger, and salt until well combined.
Fold in half of the whipped topping until evenly mixed.
Spoon the filling into the graham cracker crust and spread evenly.
Top with the remaining whipped topping.
Refrigerate for at least 4 hours, or until set.
Serve chilled and enjoy!