Crush the cookies into crumbs. Melt the butter and mix it into the crumbs. Transfer the crumbs into the cake form and press them down to form the base.
Put the base in the fridge while you make the cream.
Using a hand mixer, mix together the cream cheese, powdered sugar and vanilla sugar in a large bowl. Add the peanut butter and mix again until smooth. Next add the heavy cream and mix well again.
Pour the cream on the base of the cake, sprinkle some chopped salted peanuts on top, and refrigerate for at least 6 hours. Done!
