Prepare the pan: Lightly grease a 9-inch springform pan, then line the bottom with parchment paper. This makes clean slices and easy removal.
Crush the Oreos: Add cookies to a food processor and pulse to fine crumbs. If you don’t have a processor, seal in a zip-top bag and crush with a rolling pin until sandy.
Make the crust: Stir in melted butter and a pinch of salt until all crumbs look evenly moistened.
The mixture should hold together when pressed.
Press and chill: Firmly press the crumbs into the bottom and slightly up the sides of the pan. Use the bottom of a measuring cup to pack it tight. Chill for at least 20 minutes while you make the filling.
Whip the cream: In a cold bowl, whip heavy cream with a pinch of salt to stiff peaks.
Don’t overbeat into butter. Set aside.
Beat the cream cheese: In a separate bowl, beat cream cheese until smooth and fluffy, about 1–2 minutes. No lumps should remain.
Add sweetness and flavor: Beat in powdered sugar, vanilla, and lemon juice until fully combined and silky.
Fold in whipped cream: Gently fold the whipped cream into the cream cheese mixture in two additions.
Use a spatula and light strokes to keep the mixture airy.
Fill the crust: Spoon the filling into the chilled crust and smooth the top with an offset spatula. Tap the pan lightly on the counter to release air pockets.
Chill to set: Cover and refrigerate for at least 6 hours, preferably overnight. The longer chill gives cleaner slices and a firmer set.
Garnish and serve: Run a thin knife around the edge and release the springform.
Top with crushed Oreos, berries, or chocolate shavings. Slice with a hot, clean knife for neat edges.