Preheat oven to 325°F (163°C). Grease a 9-inch springform pan

In a medium bowl, combine the chocolate cookie crumbs and melted butter. Press the mixture into the bottom of the prepared pan to form the crust

In a large mixing bowl, beat the cream cheese and sugar until smooth and creamy

Add the vanilla extract and mix well

Add the eggs, one at a time, beating well after each addition

Blend in the sour cream and heavy cream until the mixture is smooth

Stir in the melted white chocolate and add blue food coloring if desired, mixing until fully incorporated

Pour the cheesecake batter over the crust in the springform pan

Bake in the preheated oven for 55-60 minutes, or until the center is just set and the top appears slightly dry

Allow the cheesecake to cool in the oven with the door slightly open for 1 hour. Then, refrigerate for at least 4 hours or overnight

Before serving, garnish with cookie dough chunks or chocolate chip cookies