Steps
1. In a bowl, mix the crushed biscuit with melted butter until combined.
2. Press the mixture into the bottom of a small ramekin to form the crust.
3. In a separate bowl, whisk together the cream cheese, melted chocolate, sugar, cocoa powder, vanilla extract, and salt until smooth.
4. Pour the chocolate mixture over the crust in the ramekin.
5. Refrigerate for at least 2 hours to set.
6. Serve chilled, optionally topped with whipped cream or chocolate shavings.