Preheat your oven to 325°F and prepare a 9-inch springform pan with nonstick spray.
Mix the crushed Oreos and melted butter, then press the mixture into the bottom of the pan.
Combine raspberries and 2 tablespoons sugar in a saucepan, cooking over medium heat until smooth. Strain the mixture to remove seeds and set aside.
Melt white chocolate chips in a double boiler, stirring until smooth. Let them cool a little.
Beat cream cheese and 1 1/2 cups sugar until smooth. Add eggs one at a time, followed by vanilla and sour cream. Stir in melted white chocolate.
Pour half of the cream cheese mixture over the crust. Drizzle 2 tablespoons of raspberry sauce over it and swirl gently with a knife.
Add the remaining cream cheese mixture and raspberry sauce. Swirl again with a knife for a marbled effect.
Bake for about 90 minutes until the edges are set and the center is slightly jiggly. Turn off the oven and crack the door to cool.