Grind Oreo cookies into fine crumbs (use a food processor or zip-top bag and rolling pin)
Mix with melted butter until a dough forms
Press the mixture firmly into the bottom of a 9-inch springform pan, chilling for 15 minutes
In a bowl, beat cream cheese and powdered sugar until smooth
Add lemon zest and juice; mix until well combined
In a separate bowl, whip heavy cream until stiff peaks form
Fold whipped cream into the cream cheese mixture until fully incorporated
Spread over chilled Oreo crust
Chill for 4 hours, or until set, before slicing and serving