Optional toppings: whipped cream, chocolate shavings, or cinnamon.
In a saucepan, heat the cream over medium heat until it's warm but not boiling.
Add the finely chopped dark chocolate to the warm cream and whisk until the chocolate is completely melted and the mixture is smooth.
Stir in sugar to sweeten, adjusting to your preference.
Add vanilla extract and continue to stir until well combined.
Pour the hot chocolate into mugs and top with whipped cream, chocolate shavings, or a sprinkle of cinnamon if desired.
Feel free to customize this recipe further based on your taste preferences.