FOR CRUST: In a small bowl, combine cookie crumbs and butter; mix well.
Divide crumbs evenly between 12 (4 oz) canning jars, and press crust into the bottom of each jar.
In a medium bowl, add cream cheese, pumpkin, sugar, salt, cinnamon, nutmeg, cloves and vanilla; blend until smooth.
Divide mixture evenly between jars.
Melt chocolate chips and add a little chocolate to each jar, swirling around with a toothpick.
Chill for 2 hours before serving.