Cut the tomato, onion, and potato into bite-sized pieces.
Heat olive oil in a pan and sauté the onion and garlic.
Add the potato and stir-fry lightly, then add the tomato.
Add salt, pepper, and herbs and simmer on low heat.
Cover with a lid and simmer for 20 minutes until the potatoes are cooked.
Finish by sprinkling parsley on top.