Place the granulated sugar in a medium saucepan on low to medium heat.
Using a wooden spoon, stir constantly. Sugar will begin to bubble and turn into small rocks. Stir until all sugar has broken down and it starts turning into a golden caramel color.
Add the butter and stir until it melts.
Add the cream, salt, and vanilla. Stir until it becomes thick and creamy.
Let the caramel sauce cool for two minutes.
Pour the caramel over the chocolate ganache.
Place in the refrigerator for a minimum of two hours.
Sprinkle with coarse sea salt before serving. Enjoy!