How to make
Grind the biscuits and put them in a bowl, add the walnuts and soft butter, add the milk little by little and mix, until a soft dough is obtained.
Refrigerate it for about 10 minutes to cool slightly.
Form truffles the size of a walnut and roll them into your choice of ground walnuts, cocoa, chocolate sprinkles or coconut.
The condensed milk biscuit truffles are ready.