Crush the Oreos into a fine crumb either in a food processor or by hand.
Add the cream cheese and 1-2 tsp of the peppermint extract and mix together until it is all combined.
*I suggest adding 1 tsp of the extract at a time and test the batter to see if you want more peppermint.
Roll the Oreo mixture into balls and place on a plate lined with non stick paper.
Place in the freezer for 10 to 15 minutes.
In the meantime, melt the dark chocolate and place in a bowl add 1/4 tsp of peppermint extract to the chocolate and mix.
Melt 150g of the white chocolate and place in a separate bowl and add 1/4 tsp of peppermint extract to the chocolate and mix.
*Again I suggest testing the chocolate to see if you want to up the extract amount to 1/2 tsp.
Dip the Oreo balls into the chocolate one at a time. I like to alternate between the two chocolates.
Melt the remaining 50g of white chocolate.
To that 50g of white chocolate add a touch of red food colouring paste and stir through.
Add tiny amounts of red food colouring until you have a nice red.
Drizzle this red drizzle over the white chocolate covered truffles for the finishing touch.
Lightly sprinkle over the crushed candy canes over the dark chocolate covered truffles and then place the truffles in the fridge until the chocolate has set.
Store the truffles in an airtight container in the fridge for up to one week.
Notes
I use red food colouring paste so the food colouring doesn't split the chocolate. Some liquid food colourings can do this.