Preheat the oven to 350℉. Spray or brush a small glass rectangular with oil and set aside.
In a large bowl, add gluten-free flour, cornstarch, flaxseeds, baking powder, salt.
In another bowl, mix coconut milk, coconut oil, and vanilla.
Mix with dry ingredients until fully combined.
Scoop the batter into the prepared baking pan. Bake for about 30 minutes or until the fork comes out clean. Poke holes throughout the cake using a fork or skewer.
Meanwhile, combine the coconut cream with the coconut condensed milk and immediately pour it over the coconut cake.
Allow cake to cool completely, top with coconut whipped cream, and sprinkle with coconut flakes.
Keep the cake in the refrigerator. Serve and enjoy.