Preheat the oven to 350 degrees F (175 degrees C).
Combine the walnuts, dates, graham cracker crumbs, 1/4 cup sugar, and melted butter in a bowl. Press the mixture into the bottom of a 9-inch springform pan.
Bake for 10 minutes. Remove from oven and set aside to cool.
Beat the cream cheese and 1 cup sugar in a large bowl until smooth. Add the whiskey and vanilla extract and beat until combined.
Add the eggs, one at a time, beating well after each addition.
Stir in the melted chocolate chips and pour the mixture into the prepared crust.
Bake for 50-60 minutes or until the center is almost set. Remove from the oven and allow to cool.
Refrigerate for at least 4 hours or overnight.
When ready to serve, whip the heavy cream until stiff peaks form. Spread over the top of the cheesecake and serve.