Break the chocolate into pieces and place into a bowl.

In a small saucepan, heat the cream until simmering. Pour the simmering cream over the chocolate and mix until smooth and evenly melted.

Add the vanilla and stir. Let cool 15 minutes.

Meanwhile, in a small bowl, sprinkle the gelatin over 4 tablespoons cold water and mix well. Add 4 tablespoons boiling water and stir constantly until completely dissolved.

Add the dissolved gelatin to slightly cooled chocolate-cream mixture and mix well.

Spoon into 4 serving cups and refrigerate until set.