Melt chocolate in double boiler or microwave.
Once the chocolate is melted let it cool down a bit and then add vanilla extract to it.
Add half cup of condensed milk and mix wellm
Cover and refrigerate for 15 mins so the mixture is hard enough to make truffles.
Take a small portion of the mixture and make 1 inch size balls of it.
Coat the chocolate truffles with coconut, cocoa powder and crushed walnuts.
Chill it for some more time or serve like that.
Store in an air tight container, stays good for 3-4 days.