01 - Preheat oven to 350°F (175°C).
02 - In a medium bowl, mix chocolate cookie crumbs with melted butter until evenly coated. Press firmly into the bottom and up the sides of a 9-inch pie dish.
03 - Bake crust for 8–10 minutes. Let cool completely.
04 - In a large bowl, whisk instant pudding mix with cold milk and peppermint extract until thickened, about 2 minutes.
05 - Add a few drops of green food coloring to achieve desired shade, mixing well.
06 - In a separate bowl, whip heavy cream with powdered sugar and vanilla extract to stiff peaks.
07 - Fold half of the whipped cream into the green pudding mixture until smooth.
08 - Spread the filling into the cooled crust.
09 - Top with remaining whipped cream, swirling gently with a spatula to create a marbled effect.
10 - Refrigerate at least 2 hours, or until set.
11 - Garnish with chocolate shavings and fresh mint leaves before serving, if desired.