Mix the cookie crumbs and melted butter until combined, then press down on the bottom of an 8 inch (20 cm) springform cake pan (or line a regular cake pan with plastic wrap). Place in the refrigerator while you make the filling.
In a medium bowl beat together the yogurt, cream, sugar, zest, juice and cream until creamy and thickened. Set aside.
In a small pot add the milk and sprinkle the gelatine on top, let stand one minute, then place the pot on low heat and heat just until the gelatine has dissolved, stirring often (1-2 minutes), do not boil, then immediately remove from heat. Add a heaping tablespoon of the yogurt mixture to the gelatine mixture and stir gently to combine, then fold into the remaining yogurt mixture until combined.
Remove the cookie base from the fridge, spoon the filling evenly on top, cover with plastic wrap and freeze for 3-5 hours or even better overnight until firm. Let sit for 10-15 minutes before serving then top with a dollop of whipped cream and grated white chocolate and or more lemon zest or lemon slices. Enjoy!
Notes
Storage TipsOnce the pie is fully frozen, cover tightly with plastic wrap or foil to prevent freezer burn. Individual slices can also be stored in an airtight container for easy serving. Let it soften at room temperature for 10–15 minutes before serving.