In a bowl, combine the sugar with the butter until sugar is dissolved.
Add the mandarin juice, almond milk, flour, baking powder, baking soda, vanilla extract and a pinch of salt. Mix well until creamy.
Let it rest for 15 minutes.
Peel and cut the mandarins horizontally into thick slices.
Brush the baking tray with coconut oil and sprinkle the bottom and sides with brown sugar.
Cover the bottom of the pan with mandarin slices.
Pour the dough over them.
Bake at 180 degrees Celsius for 30-35 minutes.
Use a toothpick to check when the cake is done.
Take out of the oven and let the cake rest for 10 minutes.
Flip it on a serving tray/plate.
Serve with vegan whipped cream.