Prep the pan: Line the bottom of a 9-inch springform pan with parchment paper. Lightly grease the sides.
Make the crust: Pulse 24 Oreos (cookies and cream together) in a food processor until fine crumbs.
Mix with melted butter and a pinch of salt until it resembles wet sand.
Press and chill: Firmly press crumbs into the bottom and slightly up the sides of the pan. Use a flat-bottomed cup to compact. Chill in the fridge for at least 20 minutes.
Beat the cream: In a cold bowl, whip heavy cream to stiff peaks.
Set aside.
Make the cheesecake base: In a separate bowl, beat softened cream cheese until smooth. Add powdered sugar, vanilla, lemon juice (if using), and a pinch of salt. Beat until creamy with no lumps.
Fold it together: Gently fold the whipped cream into the cream cheese mixture in two additions until just combined.
Do not overmix.
Add Oreos: Fold in the chopped Oreos so they’re evenly spread through the filling.
Fill the crust: Spoon the filling over the chilled crust. Smooth the top with an offset spatula.
Chill to set: Cover and refrigerate for at least 6 hours, preferably overnight, until firm enough to slice.
Finish and serve: Run a thin knife around the edge, release the springform, and top with whipped cream and crushed Oreos if you like. Slice with a warm, clean knife for neat edges.