01 -
Heat the oven to 325 F. Grease a 9-inch springform pan and wrap the outside tightly with heavy foil to protect it from the water bath.
02 -
Mix the cookie crumbs, sugar, salt, and melted butter until evenly moistened. Press into the bottom and slightly up the sides of the pan. Bake for 10 minutes, then cool while you make the filling.
03 -
Beat the softened cream cheese and sugar on medium speed until smooth and creamy, about 2 minutes. Scrape the bowl well.
04 -
Mix in the sour cream, dulce de leche, vanilla, and salt. Add the eggs one at a time on low speed, mixing only until each egg disappears.
05 -
Pour the filling into the crust. Set the springform pan in a roasting pan and add hot water halfway up the sides. Bake 60-70 minutes, until the edges are set and the center still jiggles slightly.
06 -
Turn off the oven and crack the door open. Let the cheesecake rest inside for 1 hour, then cool to room temperature and refrigerate at least 6 hours or overnight.
07 -
Warm the dulce de leche with heavy cream until spreadable. Spoon it over the chilled cheesecake, spread gently, and finish with flaky salt if desired.