FOR THE FROSTING:
- 1 cup unsalted butter, softened
- ½ cup caramel sauce (homemade caramel sauce or jarred is fine
- 4 cup powdered sugar
- 2 Tablespoons milk
- ½ tsp kosher salt
FOR THE GANACHE:
- 4 ounce dark chocolate
- ⅓ cup heavy cream
- 2 Tablespoons caramel sauce
- pinch of kosher salt