Preheat the oven to 180 degrees Celsius or 356 degrees Fahrenheit.
For the vanilla cake, mix the soy milk with the apple cider vinegar and let it stand for 5 minutes.
Then mix all the liquid ingredients for the cake, add the dry ingredients and mix with a whisk until there are no lumps (do not overmix the batter). Pour the cake batter into 6 muffin tins and bake in the oven for 20 minutes.
Meanwhile, blend all the ingredients for the coconut cream in a blender or with a whisk until the mixture is creamy.
Remove the baked muffins from the moulds, leave to cool and cut into slices with a thickness of 1-2 cm.
Layer the tiramisu: first add the round cake into four jars, soak it with fruit juice using a brush, divide a third of the coconut cream between the jars, sprinkle with coconut flakes and top with pineapple pieces. Repeat this process twice. Chill the jars in the fridge for at least 2 hours before enjoying.