Place oats in a bowl and add the 1 and a half cups of water to pre-soak.
Bring a pot of water to boil on the stove
Add egg to the pot of boiling water and cook for 7 minutes for a soft, jammy yolk. Ensure to tip hot water out of pot when done and add cold water to the pot to stop cooking process when done. Set egg aside once cooled and set pot aside to use again.
While the egg is cooking, prepare the vegetables: mince the garlic cloves and slice the mushrooms and greens.
Pour the oats and oat soaking water into the pot. Bring to the boil and then turn down heat and gently simmer for 3-4 minutes, stirring occasionally until oats are cooked.
While oats are cooking, heat a seperate pan and add olive oil to the pan.
Add garlic, mushrooms and greens to the pan and cook for 2-3 minutes, then add 1 tsp of the soy sauce to the vegetable and stir through.
Assemble the bowl: pour oats into the bowl first, add the stir fried vegetables, the peeled boiled egg and drizzle over sesame oil, remaining soy sauce and top with garnishes.