Line the base and sides of a 20 cm/8 in round springform cake tin with baking paper.
Place the biscuits in a food processor and blitz until very finely crushed. Alternatively, place them in a sealable freezer bag wrapped in a tea towel and bash them with a rolling pin.
250 g (9 oz) Digestive biscuits
Tip the crushed biscuits into a bowl and mix in the melted vegan butter. It should resemble damp sand.
100 g (7 Tablespoons) vegan block butter
Tip the biscuit mixture into the prepared tin and pack the crumbs down really firmly and evenly, use the base of a glass to help press them down.
To make the filling, melt the white chocolate and passion fruit puree together until smooth. You can either do this in short bursts in the microwave, stirring often, or in a bowl set over a pan of gently simmering water (do not let the base of the bowl touch the water).
200 g (7 oz) vegan white chocolate, 165 g (⅔ cup) seedless passion fruit pulp*
Whisk in the cream cheese, lime juice and vanilla extract, making sure there are no lumps.
300 g (10 ½ oz) vegan cream cheese, juice of ½ lime (1 Tablespoon), 2 teaspoons vanilla bean paste or extract
In a separate bowl, whisk the cream and icing sugar with an electric mixer until it thickens and forms stiff peaks.
160 g (⅔ cup) vegan whipping cream, 3 Tablespoons icing (powdered) sugar
Add the whipped cream to the cream cheese mixture and stir gently with a balloon whisk until combined, do not overbeat it.
Pour the cheesecake mixture on top of the biscuit base and spread it level. Refrigerate for at least 4 hours, preferably overnight, until firm.
Once the cheesecake has set, unclip the springform tin and remove the sides. Gently slide it onto a serving plate, a cake lifter is useful for this; then peel the baking paper off the sides of the cheesecake.
Give the chilled passion fruit curd a good stir until it is smooth and creamy then spread it over the top of the cheesecake and serve.