In a bowl, mix gingersnap cookie crumbs and melted butter. Press the mixture into the bottom of a springform pan to form the crust.
In a large mixing bowl, blend cream cheese and sugar until smooth. Add sour cream, heavy cream, vanilla extract, molasses, cinnamon, ginger, nutmeg, eggs, and salt. Mix until fully combined.
Pour the cheesecake filling over the crust in the springform pan. Bake for 60 minutes or until the center is set.
Let the cheesecake cool completely before removing it from the springform pan.
To make the caramel, heat granulated sugar in a saucepan over medium heat until it melts into a golden liquid. Gradually add butter and then heavy cream, stirring continuously until smooth.
Drizzle the caramel over the cooled cheesecake before serving.
Notes
Serve the cheesecake chilled. You can top it with whipped cream for extra flavor.