Add white chocolate pieces to a microwave safe bowl. Melt until smooth in intervals of 30 seconds. It takes about 90 seconds. Stir gently using a spatula at each interval. Once melted set aside.
Break the chocolate cookie into pieces and add to a food processor fitted with metal blade. Add pistachio butter and a pinch of salt (it opens the flavor). Alos add melted chocolate(if using).
Pulse until the cookie resembles crumbs. Set aside.
In a large bowl, add softened cream cheese and heavy cream.Also add melted chocolate, pistachio butter, cardamom powder, rose water and powdered sugar.
On medium speed, beat the mixture, until combined very well. It should be smooth and creamy. Taste. It should be nicely sweet. This cheesecake is not faintly sweet.
In a small serving cup (I use 7 oz short glasses), add 2 tablespoon of the cookie crumbles and press down to create a even layer.
Carefully spoon or pipe cheesecake filling mixture over the cookie crumbles.Fill all the serving cups in similar manner. Smoothen the tops.
Place the dessert cups to set in a refrigerator for 4-6 hours. Top with a dollop of pistahcio butter, crushed pistachios and a raspberry for a pop of color.Serve chilled!