For Sprinkling
Into a bowl, add the milk powder and half of the can of condensed milk.
Mix very well and add the other half, mix again. Use your hands when you can no longer mix with the spoon, mix until a dough is formed.
Add another ½ cup of milk powder if necessary, to reach the right consistency.
Get a piece of dough and flatten into a circle, fill it with some Nutella, but not too much, to make it easier to close.
Seal well and round into a ball shape.
Serve.