Bring water to a boil in medium saucepan, add the steel cut oats, stir and reduce heat to a very low simmer and cook per package directions until oats are tender and all water is absorbed. (For reference, I use Quaker steel cut oats and cook them in an All-clad saucepan on the lowest burner setting for exactly 24 minutes, uncovered.)
While oats are cooking, separately chop green onion and Swiss chard, discarding the tough stems of the chard.
When oats are about 5 minutes from being done, add olive or avocado oil to a small non-stick skillet and sauté onions for about a minute until they begin to soften. Add Swiss chard and the 1 teaspoon water and cover, steaming everything for a couple more minutes until the chard is tender.
Once oats are done cooking, transfer them to a serving bowl and sprinkle with the shredded parmesan while they're hot.
Top with the green onions and Swiss chard.
Use the skillet (now empty) to fry your egg. I prefer mine over easy so that there's some liquid yoke to mix into the oats, but fry yours however you like. Place on top of the oats and onions/chard, drizzle a little sriracha over the top and enjoy!