Rich and decadent Nutella-swirled cheesecake bars with a buttery, crunchy vanilla cookie-hazelnut crust.
Preheat oven to 350°F/180°C. Line an 8×8-inch baking pan with parchment paper, leaving enough overhang on the sides for lifting the cheesecake out after baking.
Reduce oven temperature to 300°F/150°C.