Wash and slice the mushrooms and onion into bite-sized pieces.
Soak the oatmeal in water.
Heat olive oil in a pan, then sauté the onion and mushrooms.
Once the mushrooms are cooked, add oatmeal, milk, and salt, and bring to a boil.
Simmer on low heat, stirring constantly, until you reach risotto consistency.
Transfer to a plate and finish with a sprinkle of herbs or pepper.