Prepare the brownie mix as the instructions are listed on the box.

Bake in a prepared 9x9 pan following the temperature and time instructions on the box.

Once baked, allow it to cool enough to touch.

Using a large spoon, lightly press down on the brownie to compact it down slightly.

Preheat the oven to 350 degrees Fahrenheit.

To start the filling, place the cream cheese and sugar into a mixing bowl.

Once well combined, add in the marshmallow fluff and mix one final time.

Pour over the brownie and spread evenly.

Using a spoon, drizzle the Nutella on the cheesecake evenly.

Take a toothpick and swirl around the Nutella into the cheesecake.

Bake for 20 minutes.

Once the 20 minutes are up, without opening the oven door, reduce the heat to 200 degrees and bake for an additional 30 minutes.

Once finished baking, turn the oven off leaving the cheesecake inside for 10 minutes.

Remove and allow the cheesecake to come to room temperature.

Once at room temperature, cover, and place in the refrigerator for at least 3 hours.

Once chilled, take out and cut into 12 squares.

Serve with fresh fruit or enjoy as is.