Chop the onion and garlic.
Cut the cherry tomatoes in half.
Add olive oil to a pan and sauté the onion and garlic.
Add the rice and cook until it becomes translucent.
Add the cherry tomatoes and tomato sauce, then mix well.
Gradually add vegetable stock or water, simmering as you go.
Season with salt and pepper.
Sprinkle Parmesan cheese on top to finish.