Preheat the oven to 350F and lightly grease a 8″ square pan with coconut oil or any other cooking fat.
Combine all cake ingredients in a high-powered blender and process until smooth.
Spread the batter into the cake pan and bake for 25-30 minutes or until a toothpick inserted into center comes out clean.
Combine all ingredients for the frosting in a blender and process until smooth.
Allow the cake to cool before frosting. Store in the fridge.