How to Make It
Heat the oven to 375°F.
Combine the rice flour, baking powder, and salt. Set aside.
Cream the butter and gradually add the sugar while whisking. Add the beaten eggs, incorporate into the butter-and-sugar mixture well. Gradually add the flour mixture and then add the coconut milk.
Line a pie plate or cake pan with the banana leaf. Pour the well-mixed batter into the lined pan. Bake for 15 minutes. Remove and add the sliced salted duck egg on top and continue to bake until a toothpick comes out clean, 15 to 20 minutes.
Garnish with grated coconut and serve warm.