01 - Whisk together the pistachio pudding mix and cold milk in a medium bowl for 2 minutes until thickened. Set aside to thicken further for approximately 5 minutes.
02 - Beat the heavy whipping cream, powdered sugar, and vanilla extract in a separate bowl until soft peaks form.
03 - Prepare individual parfait glasses. Add a layer of crushed cookies at the bottom of each glass as the foundation.
04 - Spoon a layer of pistachio pudding over the cookie crumbs, followed by a layer of whipped cream.
05 - Repeat the layers until the glasses are filled, ensuring the top layer is whipped cream for a finished appearance.
06 - Top each parfait with chopped pistachios, green sprinkles, and a fresh mint leaf if desired for festive presentation.
07 - Refrigerate the parfaits for at least 30 minutes before serving to allow flavors to meld and achieve optimal texture.