Preheat your oven to 230 C (450 F). Assemble your springform pan.
Add the cookies to your food processor and pulverize until they are crumbs. Melt the butter in your microwave. Add the crumbs to a mixing bowl, add the butter, mix until combined.
Pour the crumb mixture into the springform pan and tamp down to make an even layer. Set the pan aside.
In a mixing bowl, beat together the cream cheese and butter until smooth. Then add the sour cream and vanilla and mix in.
Add the cocoa powder and flour, beat together.
Add the eggs one at a time, mix in until just blended.
Pour into the prepared pan. Bake for 10 minutes then reduce the heat to 120 C (250 F) and bake for another 40 minutes.
Remove from the oven and place on a wire rack, loosen the cake from the side of the pan with a knife.
Allow the cake to cool completely.
After the cake is cooled completely, remove the springform side.
Prepare the drizzle by microwaving the chocolate chips and butter for 30 seconds, then in 15 second intervals until fully melted, stirring after each time microwaving. Or melt some almond bark in the microwave (this is what I did) for the drizzle.
Drizzle the chocolate on the cake. Cover and place the cake in the fridge for 4 to 6 hours before serving.
Slice, serve, and enjoy.