Quickly mix butter, brown sugar, sugar, vanilla sugar, milk, salt and flour to a smooth dough. Finely chop the dried cranberries and mix into the dough. Wrap a total of approx. 20 chocolate-coated crispy balls each with some Cookie-Dough and form into balls. Put them in a cold place.
Finely chop the dark chocolate coating and melt in a hot water bath, except for 1-2 tbsp. for sprinkling. Pull the Cookie-Dough balls through the chocolate coating with a praline fork or a wooden skewer, let them drip off briefly and place them on a sheet of baking paper. Sprinkle with the rest of the chocolate. Let the cookie dough balls dry.