Grind biscuits to obtain crumbs. Heat sauce in a thick bottomed pan . Mix in the biscuit crumbs and keep stirring till the mixture thickens.
Allow the mixture to cool. Grese your palms with butter or ghee and take small portion of chocolate mixture and shape it into a ball. Spread chopped nuts on a plate. Roll the ball to get it coated with nuts.Repeat till you are done with the chocolate mixture.
This is going to be a yummy delight on Christmas Eve!