Cook rice in a pot over stovetop according to instructions on the packaging.

While rice is cooking, chop up onion, garlic, and tomatoes.

Heat olive oil in a large skillet and add onion, garlic and tomatoes. Once olive oil is mostly absorbed and onions start to turn golden, add butter. Then, add tomatoes and mushrooms.

Once rice is cooked, transfer to the large skillet; stir in lettuce, thyme and parmesan cheese.

Remove from heat, add extra parmesan cheese and enjoy!