Melt the white chocolate in the microwave (30secs at a time until melted), stirring between heating until smooth. Set this aside to cool.
Beat the cream cheese until smooth and fluffy (either in a stand mixer, using an electric whisk or good old-fashioned elbow grease).
Add in the condensed milk and cooled white chocolate, beat until fully combined.
Beat in the eggs, dissolved coffee, vanilla extract and icing sugar until smooth and creamy.
Remove the crust layer from the fridge and wrap the base of the tin with two layers of foil.
Pour the mix over the chilled crust and sit it in a roasting tin. Pour hot water into the roasting tin to come halfway up the sides of the cheesecake tin protected by foil.
Bake for 50-60min in the oven, until the cheesecake centre lightly wobbles but doesn't splash. Turn off the oven and leave the cheesecake inside for 1hr to cool and set with the oven door slightly open (you can use a silicone or wooden spoon to prop it open if needed).
Take the cheesecake out of the oven and let it cool further on the side for roughly 1hr before chilling it in the fridge for 1hr (still in the tin).