Finely chop the onion and garlic.
Heat olive oil in a pan and sauté the garlic and onion.
Add the oatmeal and stir-fry briefly.
Pour in the milk and simmer over medium-low heat, stirring occasionally.
Season with salt and pepper to taste.
Add cheese and stir until melted.
Serve in a bowl and garnish with Parmesan cheese or herbs.