Take it in a bowl, add crushed cornflakes, Nutella and mix well.
Take small portions from it and roll into balls.
Place these balls in a foil lined plate and chilli them for 10 mins.
Now melt some dark chocolate chips either over a double boiler or microwave for 1 to 2 mins.
Now take the balls from the fridge and dip them in melted chocolate and place them in the same plate and freeze for further 5 mins.
Now melt some white chocolate separately. Pour that in a ziploc bag
Drizzle over truffle and set in fridge.
Serve.
Notes
1)You can use any biscuits or cookies as you wish.
2)After shaping into balls, you can just roll them in cocoa, powdered sugar, sprinkles, chopped nuts or desiccated coconut as you wish.
3)You can leave cornflakes out and use chopped nuts as well.