Crust
Nonstick vegetable oil spray
2 1/4 cups finely ground graham crackers (from about 17 whole graham crackers)
2 tablespoons sugar
1/4 teaspoon ground cinnamon
10 tablespoons (1 1/4 sticks) unsalted butter, melted
Filling
3 8-ounce packages Philadelphia-brand cream cheese, room temperature
1 cup sugar
3 large eggs
1/2 cup purchased dulce de leche*
2 teaspoons vanilla extract
Glaze
2/3 cup purchased dulce de leche*
3 tablespoons (or more) heavy whipping cream
Fleur de sel
*A thick, sweet sauce made from caramelized sugar in milk or from sweetened condensed milk; available at some supermarkets and specialty foods stores and at Latin markets.