Preheat oven to 350° F (175° C). Butter a 10” Bundt or tube pan.
In a bowl, whisk flour with coconut, cornstarch, Cinnamon, baking powder, nutmeg and Sea Salt.
Cream margarine with sugar using an electric mixer, occasionally scraping down sides of bowl for about 4-5 minutes, until light and fluffy. Gradually beat in eggs, then vanilla (don’t worry if batter splits; it will come together later on). Add potato and beat until mixed. Gradually beat in flour mixture just until moistened.
Spoon in prepared pan and smooth over top. Bake for 60-70 minutes, until a cake tester or wooden skewer inserted in cake comes out clean. Let cool in pan for 10 minutes, then loosen cake and turn out onto a cooling rack. Cool completely.
Nutritional Information
Per serving: Calories 300, Fat 11 g (Saturated 2.5 g, 0 0 g), Cholesterol 55 mg, Sodium 260 mg, Carbohydrate 49 g (Fiber 3 g, Sugars 25 g), Protein 5 g.