Preheat your oven to 325°F (160°C). Grease a 9-inch springform pan and set aside.
In a mixing bowl, combine the graham cracker crumbs, melted butter, and 2 tablespoons of sugar. Mix until the crumbs are evenly coated. Press this mixture firmly into the bottom of the prepared springform pan to create the crust.
In a small saucepan over low heat, melt the white chocolate chips, stirring frequently until smooth. Remove from heat and allow to cool slightly.
In a large mixing bowl, beat the softened cream cheese and 1 cup of sugar together until creamy and smooth.
Add the eggs one at a time, mixing well after each addition, then incorporate the vanilla extract and sour cream. Mix until well blended.
Gently fold in the melted white chocolate until fully incorporated. Be careful not to overmix.
Pour half of the cheesecake batter into the crust, then drizzle half of the raspberry puree over the batter. Use a knife or skewer to swirl the puree into the batter.
Pour the remaining batter on top, then drizzle with the rest of the raspberry puree and swirl again.
Bake in the preheated oven for 55-60 minutes, or until the center is set and only slightly jiggly. Turn off the oven, crack the door open, and let the cheesecake cool in the oven for an hour.
Remove the cheesecake from the oven and let it cool completely at room temperature. Then refrigerate for at least 4 hours, preferably overnight, to set fully.
Before serving, garnish the top with fresh raspberries.
Notes
For best results, refrigerate overnight before serving.