In a medium bowl, combine graham cracker crumbs, melted butter, and 2 tablespoons of sugar until mixed well. Press the mixture into the bottom of a 9-inch springform pan to form the crust. Bake for 10 minutes, then remove from the oven and allow to cool.
In a large mixing bowl, beat the softened cream cheese with a hand mixer on medium speed until fluffy. Gradually add 1 cup of granulated sugar, blending well.
Add eggs one at a time, making sure to fully incorporate each before adding the next. Mix in vanilla extract and sour cream until smooth.
Pour half of the cheesecake batter over the cooled crust in the springform pan.
Spoon half of the Nutella over the cheesecake batter and use a knife or spatula to swirl it into the batter slightly. Add the remaining cheesecake batter on top and then spoon the remaining Nutella, again swirling it for a marbled effect.
Bake in the preheated oven for 55-60 minutes until the center is set but slightly jiggly.
Turn off the oven, slightly crack the door open and allow the cheesecake to cool inside for about an hour to prevent cracking.
Once cooled, refrigerate the cheesecake for at least 4 hours or overnight for best results.
Before serving, remove the sides of the springform pan and slice the cheesecake.