In a medium saucepan, combine the oat bran, water, and milk. Bring to a gentle boil over medium heat, stirring occasionally. Once boiling, reduce the heat to low and let it simmer for about 5-7 minutes until the mixture thickens.
Add the garlic powder, onion powder, kosher salt, and black pepper to the oat bran mixture. Stir well to ensure the seasonings are evenly distributed, and cook for an additional 2 minutes.
In a frying pan, heat the sesame oil over medium heat. Add the sliced shiitake mushrooms and sauté for about 4-5 minutes until they are golden and tender. Add the low sodium soy sauce and sliced green onion, stirring to combine. Cook for another minute until fragrant.
In the same frying pan, crack two eggs and fry them to your preferred doneness. A runny yolk adds a lovely richness to the dish, but feel free to cook them longer if you prefer.
In a serving bowl, scoop out the savory oat bran mixture. Top it with the sautéed shiitake mushrooms and the fried eggs.
Finish your Savory Asian Oat Bran with crushed red pepper flakes, black sesame seeds, a drizzle of sriracha, and more sliced green onion as desired.