Preheat the oven to 375º F (180º C). Line a square pan of about 7.80 inches (20 cm) with parchment paper.
In a big bowl, mix the nutella with the eggs using a whisk.
Add in the sifted flour and mix until you get a smooth batter and all the ingredients are integrated.
Pour this batter into the pan and even it out. Bake at 375º F (180º C) for 15 minutes until they are cooked. Be careful not to overcook them.
Once the brownies are ready take them out of the oven and let them cool down for 10 minutes. Then turn them out and cut them into 16 same size portions.