Preheat oven 160°C (320°F). Line the base of a 21cm (8 inch) springform cake tin with baking paper.
Blitz Oreos (with cream) in a food processor until they have formed a fine crumb.
Put Oreo crumbs in a medium size bowl, stir through the melted butter. When crumbs and butter and thoroughly combined place in the lined spring form tin.
Press crumb up the sides and along the base of the tin. I find using a flat bottomed thick glass perfect for smoothing out the surface and keeping it uniform in thickness. Once done place in fridge until required.
Using a stand mixer or hand beaters, beat cream cheese, sugar and vanilla bean paste together until smooth.
Add eggs one at a time, beating well between each addition until mixture is well combined.
In a small bowl mix cornflour with 2 tablespoons of cream.
Add cornflour slurry, remaining cream and melted white chocolate to the cream cheese mixture. Beat until well combined.
Pour cream cheese mixture into prepared Oreo biscuit base.
Place springform tin on a lined baking tray and place in oven. The baking tray will catch any butter that leaks from the tin.
Bake cheesecake for 50-60 minutes, until it is set in the centre.
Once cheesecake is cooked through turn the oven off, and leave the cheesecake in the oven, with the door ajar for a further 2 hours or until cooled.
Once cheesecake has cooled in the oven place in the refrigerator to chill. Cheesecake may be made the day before serving.
On the day of serving cover top of cheesecake with whipped cream and sliced mangoes.
For mango decoration on top of cheesecake Peel mangoes and cut the cheeks away from the large centre seed. Place mango cheeks cut side down on a chopping board. Using a sharp knife cut mango cheeks in to thin strips length wise. Using the longest slices of mango, strat from the outside edge of the cheesecake and layer your slices around the edge. Keep going with more mango slices, laying those next to already placed mango slices. Continue going with the rest of the mago working your way into the centre of the cheesecake. Using the smaller slices towards the centre.Cheesecake can be made the day before serving undecorated. Decorate cheesecake with cream and mango the day of serving.