Make a powder of 14-15 marie biscuits. Sieve and use the fine biscuit powder.
Beat 1 1/2 tbsps butter till smooth.
To this, add the biscuit powder, 2 tbsps cocoa powder, few drops of vanilla essence and 6-7 tbps of milk and combine well to form a smooth dough.
Grease your fingers and palm with melted butter or ghee and roll into small balls. Keep aside.
Roll the balls in sprinkles or dessicated coconut and serve.