Mix all the ingredients in a bowl and make a smooth dough. Cover the bowl with a plastic foil and let it rest for 1 hour.
Roll out the dough to a big square, and press the both forms in equal amount to make cookies. Place the cookies on a baking paper.
Preheat the oven at 180 degrees Celsius. Place the cookies in the middle of the oven for 10 minutes, and take them out and let them rest a few minutes.
Spread the Nutella on all the bases and place the figurines on top of them. Press so you see that the eyes and mouth are filled with the chocolate cream.