Preheat the oven to 320°F, prepare a round baking pan with oil spray, set aside.
In a large bowl, mix the butter and sugar using a beater, until obtaining a soft yellow mixture. Add the eggs and vanilla extract, mix well with the beater. Then add the dry ingredients, flour, baking powder, and salt. Beat as slowly as possible, just to combine the ingredients, do not overbeat. Finally add the Nutella using a spatula.
Put the mixture in the reserved mold and bake for 50 minutes to 1 hour, until you can insert a toothpick and it comes out dry, only a couple crumbs should stick to it. Allow to cool for 20 minutes and unmold, allow to cool off completely, and serve. You can sprinkle some powdered sugar for decoration. This time decorate with dulce de leche, melted chocolate, and raspberries.