Begin by putting parchment paper in a 9×9 pan. This keeps the fudge from sticking to the pan.
Put the white chocolate chips and marshmallow fluff in a big bowl. Set aside.
In a pan melt the sugar, heavy cream, salt and butter on medium heat until it starts to boil. Cook for 5 minutes.
Pour the hot stuff into the bowl of chocolate chips and mix with the mixer until it's smooth and soft.
Mix (fold) in half of the peppermint Crunch Bits and all the crushed Oreos. Pour into your pan.
Sprinkle the rest of the peppermint crunch bits on the top. Press down a bit. Put in the fridge for 3-5 hours to let it set.