Finely chop the tomato and onion.
Prepare the oatmeal.
Heat olive oil in a pan and sauté the onion.
When the onion becomes translucent, add the tomato and sauté.
Add the oatmeal and mix well.
Pour in vegetable broth or water and simmer until the oatmeal is cooked.
Season with salt and pepper.
Finish with Parmesan cheese and basil on top.