Start by adding the Nutella to the pre-cooked white rice and mix until well combined.
Next, transfer everything to a blender, add the vegetable oil, the eggs, the condensed milk and blend everything very well until smooth.
In a large pot, add the cornstarch, the refined sugar, the Nutella, the milk and mix everything very well.
Turn the heat to medium-low and stir everything very well until it thickens slightly.
Turn off the heat and let it cool until warm.
Next, take the mixture from the blender and transfer it to a large bowl.
Add the shredded dried coconut, the baking powder and mix everything very well to combine.
Transfer everything to a buttered and floured baking pan.
Take it to a preheated oven at 180° C (350° F) and bake for 40 minutes.
Once the cake has been baked, unmold it onto a nice plate and finish by pouring the sauce we prepared over the top.
Serve.