Soak the oats: Add oats to a medium mixing bowl. Pour over the boiling water and mix well with a fork. Let sit for a few minutes to soak up fully. Then fluff up with the fork.
Mash in the banana: Once the oats are soaked and fluffed, break one banana in half over top of the oats and mash with a fork. A few lumps are okay but you do want the texture to be quite smooth so don't be lazy.
Combine: Pour in the soy milk and then add the chia seeds. Then add the vanilla and a pinch of sea salt. Mix well and let sit for about 8 minutes, until the chia seeds have become swelled and jelly-like.
Assemble and serve: You can leave the oatmeal in the same bowl or transfer it to a pretty one. Slice the remaining banana into rounds and add them over top. Then sprinkle over the walnuts and add a drizzling of maple syrup. Enjoy!
Notes
Heads up! This only makes one serving. If you'd like, you could easily double it or triple it and you could certainly make it in advance and keep it tightly sealed in the fridge.Instead of maple, you could also use date syrup here, if you have some. Agave nectar would also work nicely!