Make the Crust: Mix graham cracker crumbs, sugar, salt, and melted butter until the mixture resembles wet sand. Press firmly into the bottom and slightly up the sides of a 9-inch springform pan. Freeze for 15 minutes.
Beat the Cream Cheese: Beat the softened cream cheese for 2–3 minutes until smooth and lump-free.
Add the Flavoring: Add powdered sugar, fresh lemon juice, and vanilla. Beat until combined and smooth.
Whip the Cream: In a separate cold bowl, whip the cold heavy cream until stiff peaks form.
Combine: Gently fold one-third of the whipped cream into the cream cheese mixture. Fold in the remaining whipped cream until smooth and evenly combined.
Chill: Spoon the filling into the chilled crust and smooth the top. Cover loosely and refrigerate for at least 8 hours, preferably overnight.
Slice: Use a sharp knife to slice the chilled cheesecake. Wipe the knife clean between cuts for neater slices.