In a bowl, mix vanilla wafer crumbs, sugar, salt, and melted butter until combined.
Press mixture into a 9-inch springform pan and chill in the fridge.
Sprinkle gelatin over lemon juice and let sit for 5 minutes.
Warm the mixture briefly until smooth, then stir in condensed milk and cool.
Beat cream cheese and sugar until smooth.
Add sour cream and lemon zest, mixing well.
Pour in the lemon mixture and blend until smooth.
In a separate bowl, whip cream with powdered sugar to stiff peaks.
Fold whipped cream into the filling gently.
Spread filling over crust evenly.
Chill the No Bake Lemon Cheesecake Recipe for 5–6 hours or overnight.
Whip topping ingredients and pipe onto cheesecake before serving.