Preheat your oven to 350°F (175°C) and line an 8x8-inch baking dish with parchment paper.

In a medium mixing bowl, combine graham cracker crumbs, melted unsalted butter, and granulated sugar. Press into the bottom of the dish and bake for 8-10 minutes.

In a large mixing bowl, beat the cream cheese and granulated sugar until smooth, then add eggs and vanilla, mixing until fully incorporated.

Gently fold in the Nutella, ensuring the swirl pattern is visible. Pour the mixture over the cooled crust.

Bake for 25-30 minutes, keeping an eye on the edges until set while the center remains slightly jiggly.

Allow the bars to cool at room temperature for 30 minutes, then refrigerate for 2-3 hours to set.

Lift the bars out of the dish using the parchment, slice into squares, and serve with optional toppings.