Add the coconut whipping cream to a large mixing bowl. Whip until light, airy, and fluffy.
Pour in the ube condensed coconut milk and mix until fully smooth and combined.
Add the double cream and gently fold until the mixture becomes thick, creamy, and well blended.
Crush the Oreo biscuits into chunks and fold them through the mixture evenly.
Pour the mixture into a loaf tin or freezer-safe container and smooth the surface.
Add chopped Matcha KitKat pieces on top, lightly pressing some into the mixture for texture.
Freeze for at least 3 hours or overnight until fully set.
Scoop and serve, topping with extra Matcha KitKat if desired.