2Mix tomatoes, garlic cloves, salt, pepper, and olive oil in a large bowl; spread into a 9x13-inch baking dish.
3Roast tomatoes in the preheated oven until they are lightly flecked with brown spots and the garlic cloves are tender, about 45 minutes; remove from oven after 20 minutes and mash lightly with a spatula.
4About 5 minutes before tomatoes are done, place a steamer insert into a saucepan and fill with water to just below the bottom of the steamer. Bring water to a boil. Add green beans, cover, and steam until just tender, about 5 minutes. Place steamed green beans into a serving dish and combine with roasted tomatoes to serve.
Footnotes
Tip
Aluminum foil helps keep food moist, ensures it cooks evenly, keeps leftovers fresh, and makes clean-up easy.