Preheat oven to 350°F (175°C). Grease a 9-inch pie plate.
In a medium bowl, mix together graham cracker crumbs and melted butter. Press the mixture into the bottom and sides of the prepared pie plate.
In a medium bowl, cream together peanut butter, powdered sugar, vanilla, cinnamon, and nutmeg until light and fluffy. Spread the mixture into the prepared crust.
In a separate bowl, whip the heavy cream until stiff peaks form. Gently fold the confectioners’ sugar into the whipped cream. Spread the mixture over the peanut butter layer.
Bake for 30 minutes, or until the top is golden brown. Cool completely before serving.
Interesting Facts
This pie is best served chilled.
You can substitute graham crackers with other types of cookies or crackers such as digestive biscuits, vanilla wafers, or Oreos.
This pie can also be made with other types of nut butters such as almond or cashew butter.