Add biscuits , butter and powdered sugar in mixture jar.
Grind in to a powder..
Take this powder in a big bowl
Add milk and choco chips and mix well with fingers. .
Make a stiff dough from this mixture. .
Roll the balls between gloved hands until smooth and place on a plate. Refrigerate for a 20 minutes .
dip truffles in melted chocolate, coating completely. Lift out truffles with a small fork, letting excess chocolate drip off.
Transfer truffles on a plate and again refrigerate for 20 minutes.
Coast with colour full Sprinklers or balls. . serve in paper cups..