Combine brown sugar and heavy cream in a medium heavy-bottomed sauce pot and heat over medium heat.
Stir until sugar is dissolved in the cream and the mixture bubbles.
Slowly add the apple cider. It might bubble vigorously, so be gentle.
Add the vanilla extract and salt and stir to combine.
Allow mixture to simmer for 10 minutes, or until heated through.
Pour in tall glass or cups and enjoy warm.
Optional Step: Garnish with whipped topping, caramel syrup (store bought) and a cinnamon stick (optional). Enjoy!