Prepare your food. Take the butter out in advance so that it softens and comes to room temperature.
Start by crushing the cookies. This can be done in various ways, from a blender and a meat grinder to a rolling pin. To prevent cookies from scattering around the kitchen when crushing with a rolling pin, initially place them in a bag.
Prepare the cream. In a separate bowl, combine butter and condensed milk. This can be done with a simple fork, since only the fact of the cream is important, and not its properties.
Now mix the cookies with the resulting cream and, using the same fork, knead the dough until smooth. When the dough becomes thick, you can start making cakes.
Place cocoa powder on a separate plate. When forming the dough into oblong shapes, roll them in cocoa powder. So that the entire surface of the “potato” is covered with it. Next, place everything on parchment paper.
Place the resulting cakes in the refrigerator for at least an hour to allow the butter to harden.
Before serving the cake, decorate it with various sprinkles, cream, and nuts. Literally anything you want.