Add the rolled oats to a saucepan along with the cinnamon and ginger. Stir to coat the oats evenly in the spices.
Pour in the soy milk (and water if using). If possible, let the mixture sit for 10 minutes—this improves creaminess.
Cook gently over low heat for about 10 minutes, stirring occasionally. Add a little extra milk if it becomes too thick.
When creamy, turn off the heat, cover the pan, and let it rest for a few minutes.
Divide the porridge between two bowls. Add the yoghurt or kefir, nuts, seeds, prunes, date, and banana slices.
If you enjoy a sweeter bowl, drizzle with date syrup or manuka honey.
Serve warm.