In a large saucepan over medium heat, stir together the coconut milk, butter and salt. Bring *almost* to the boil.
Gradually stir in the cornmeal. Lower heat and cook the mixture for approximately 5-10 minutes, stirring constantly with spoon to prevent sticking (my non-stick pan worked really well for this recipe!) Stir until the mixture thickens and leaves the sides of the pan. If however, it becomes too thick, stir in a little more coconut water or milk.
Pour the mixture into a greased 8" x 8" ovenproof pan. Set aside for a couple minutes then cut into squares and serve warm. I think I let the coo coo set for about 10 minutes. The second time I prepared this I added a little bit of vanilla paste and a sprinkle of freshly grated nutmeg. Either version is good!