Salted Caramel Chocolate Cheesecake Cake

Ingredients :

FOR THE CHEESECAKE:
2 pkg (8oz each) cream cheese, softened
2/3 cup granulated sugar
pinch of salt
2 large eggs
1/3 cup sour cream
1/3 cup heavy cream
1 tsp vanilla
FOR THE CAKE:
1 recipe chocolate layer cake (9inch layers)- homemade or cake mix is fine
FOR THE FROSTING:
1 cup unsalted butter, softened
1/2 cup caramel sauce (homemade caramel sauce or jarred is fine)
4 cup powdered sugar
2 Tbsp milk
1/2 tsp kosher salt
FOR THE GANACHE:
4 oz dark chocolate
1/3 cup heavy cream
2 Tbsp caramel sauce
pinch of kosher salt

Directions :

FOR THE CHEESECAKE:
Preheat oven to 325 degrees. Using a large roasting pan on the lower 2/3 of the oven, preheat the pan too!
Prepare springform pan by wrapping bottom of pan (outside) with double layer of foil. Spray pan with nonstick baking spray and line bottom (inside) with a circle of parchment paper. Meanwhile, boil a kettle of water to use later.