Add the cream cheese to a medium mixing bowl, and using a hand mixer whip until smooth.
Add the vanilla, sugar, and eggs to the bowl- then whip again until evenly incorporated and the mixture's smooth.
Scrape down the sides of the bowl, and mix again- until the mixture's creamy.
Pour the cheesecake mixture out over the brownies, and smooth out evenly with a spatula.
Heat the Nutella in the microwave for 30 seconds, and stir to make sure it's smooth. Pour it out into stripes overtop the cheesecake layer.
Using a butter knife, cut the nutella into the cheesecake layer using a swirling back and forth motion. Do NOT mix together, you just want to cut in pretty swirls.
Bake again at 350° for 30-35 minutes, or until set.
Remove the cheesecake brownies from the oven, and set them aside to cool for at least 30 minutes.
Once cooled wrap the pan in cling wrap to cover & seal, and refrigerate for 2-4 hours.
Unwrap the chilled & set cheesecake brownies, then using a sharp knife slice into 12 squares.
Serve & enjoy!