Things to do with a tomato?

so i'm a lazy teenager who doesn't really know how to cook, but i have this tomato. i love roasted tomato with olive oil and parmesan cheese, but without the cheese it's too plain and we're out. is there something simple i could stuff it with? we do have cheddar, swiss and mozzarella but i feel like those are weird to just stick on a tomato. i could make rice too, and we have mushrooms and i think a few vegetables...any suggestions?