Instructions:

1. Preheat and Prepare: Preheat your oven to 325°F (163°C). Grease a 9-inch springform pan with butter.
2. Prepare the Crust: In a bowl, combine chocolate cookie crumbs, melted butter, and granulated sugar. Press the mixture into the bottom of the prepared pan to create the crust.
3. Prepare the Filling: In a large bowl, beat the softened cream cheese until smooth. Add sugar and vanilla extract, continuing to beat until well combined. Add eggs one at a time, beating well after each addition. Fold in sour cream.
4. Divide and Melt Chocolate: Divide the cream cheese mixture into three equal portions. Melt dark chocolate, milk chocolate, and white chocolate separately. Fold each melted chocolate into its respective portion of the cream cheese mixture.
5. Layer the Batter: Starting with the dark chocolate layer, pour the batter into the crust. Repeat with the milk chocolate layer and then the white chocolate layer.
6. Bake: Bake in the preheated oven for 55-60 minutes or until the center is set. Turn off the oven and let the cheesecake cool in the oven with the door ajar for an hour.
7. Prepare Ganache: Heat the heavy cream until it just begins to boil. Pour over the finely chopped dark chocolate and let it sit for a minute. Stir until smooth.
8. Finish with Ganache: Pour the ganache over the cooled cheesecake. Refrigerate for at least 4 hours or overnight.
9. Serve and Enjoy: Slice and savor the layers of chocolatey bliss in every bite of this Triple Chocolate Cheesecake.

Note: Customize your cheesecake by adding chocolate shavings, berries, or whipped cream as a delightful topping.