Combine all ingredients for the ube basque cheesecake (listed above) and mix until smooth and lump-free.
Pour into your lined 4-inch cake tin and air fry at 180°C for 16 minutes, or until the top is deeply golden and the centre still has a slight jiggle (see tips below if using oven and different size cake tins).
Let the cheesecake cool at room temperature for about 1 hour, then transfer to the fridge to chill completely.
While it cools, prepare the coconut topping by adding two-thirds of the desiccated coconut into a dry pan (don't add oil!) and toast over low heat on the stove until lightly golden. Make sure to stir around so that the coconut doesn't burn. Once golden, take off heat and set aside to cool for 10 minutes.
Mix together the remaining topping ingredients (listed above), then fold in the cooled toasted coconut.
Transfer the coconut topping into a ziploc bag, snip the corner, and pipe over the fully cooled cheesecake.
Finish with a sprinkle of the remaining desiccated coconut for texture and decoration (optional).