In an iron skillet or heavy-bottom saucepan, toast oatmeal over medium-high heat, stirring constantly to keep it from burning, until it is light brown.
Remove oatmeal from pan and set aside.
Saute onion and garlic in oil or butter until tender.
Combine with tomato, stock, soy grits and toasted oatmeal and cook over low heat for approximately 5 minutes.
Season with tamari soy sauce and salt and serve.