Begin by washing the rhubarb and cutting it into 2-inch pieces. Cut each piece in half and place them in a bowl.
Next, sprinkle the rhubarb with sugar and cover with water. Set this aside and let the rhubarb soak.
While the rhubarb is soaking, line and grease a 7-inch round cake tin. Sprinkle the bottom with a bit of sugar, then arrange the soaked and softened rhubarb pieces in a pretty pattern.
Now, preheat your oven to 180C.
For the cake, combine all wet ingredients in a jug. In a separate bowl, mix all dry ingredients.
Slowly fold the wet ingredients into the dry to create the cake batter.
Pour the cake batter over the arranged rhubarb pieces in the cake tin.
Pop the cake in the oven and bake for about 45 minutes, or until a toothpick comes out clean and the top is nicely browned.
Carefully cut around the edges of the cake, then flip it upside down to reveal the beautiful pattern.
To finish, sprinkle your cake with toasted coconut flakes to decorate and serve with freshly whipped coconut cream on the side.