Not coconut cake but maybe you will like this...
Vegan Blueberry Mug Cake - https://greenann.com/recipe/vegan-mug-cake/
Ingredients:
⅓ cup Blueberry
5-7 soaked overnight Almond nuts
DRY INGREDIENTS:
4 tbsp Whole-wheat flour
2 tbsp Sugar
1 pinch Salt
½ tsp Baking powder
WET INGREDIENTS:
8 tbsp Almond Milk
1 tbsp Extra Virgin Olive Oil
½ tsp Vanilla extract
Try!)