Line a 20cm round baking pan with non stick paper or grease with non stick cooking spray and set aside.
Crush the Oreos and mix with the melted butter. Press into the base of the prepared pan and place in the fridge while you make your cheesecake filling.
Cheesecake Filling;
Melt the dark chocolate and ¼ cup of cream together in a saucepan until smooth.
Set aside in the fridge to cool completely.
Beat the softened cream cheese until no lumps remain.
Beat in the icing sugar until smooth.
Add in the 1 cup cream and beat until thick and stiff.
Split the mixture into two bowls.
To one bowl add melted dark chocolate and cream and mix together.
To the other add the peppermint essence. (How much essence you use is up to personal taste. I used 1 and ½ teaspoon personally but you could use less or more depending on how minty you like your desserts).
Pour the peppermint layer over the Oreo Crust and spread in an even layer.
Repeat with the chocolate layer and place in the fridge for at least four hours but preferably overnight.
Ganache;
Make the mint chocolate ganache before serving.
Place the dark chocolate in a medium bowl.
In a saucepan on a medium heat, bring the cream nearly to the boil.
Remove the cream from the heat and pour over the dark chocolate.
Stir together until smooth and glossy.
Add in the mint essence.
Slice the cheesecake and drizzle over the mint chocolate ganache before serving.
The cheesecake can be stored in the fridge for up to a week.