¾cupwhite chocolate chips (plus additional for sprinkling on top, if desired) (130g)
6ozcream cheesesoftened (170g)
Preheat oven to 350F (175C). Grease and flour a 13x9 baking dish or line with parchment paper. Set aside.
In a medium-sized bowl, whisk together flour, baking powder and salt. Set aside.
In a large bowl, whisk together melted butter, brown sugar, eggs and vanilla extract.
Gradually stir flour mixture into sugar mixture, mixing until just combined.
Stir in white chocolate chips.
Spread blondie batter evenly over your prepared pan and set aside.
In a separate medium-sized bowl, stir together cream cheese, Nutella, granulated sugar and egg yolk until completely combined*.
Drop the Nutella mixture by heaping spoonful over the blondie mixture. Using a knife, swirl the Nutella batter over the blondie batter until it is evenly distributed.
Transfer to 350F oven (175C) and bake for 30 minutes or until toothpick inserted in the center comes out mostly clean with only a few crumbs.
Allow blondies to cool completely in pan before slicing and serving.
*If your cream cheese is still cold and difficult to stir, I find it helpful to pop it in the microwave in a microwave safe bowl and heat at ten second increments until it is easily stirred with a spoon.