Any tomato variety—plum, beefsteak, cherry, cocktail—will work for this easy sauce. Slideshow: More Fast Pasta Recipes
Preheat the oven to 400°. Stir together the tomatoes, olive oil, vinegar, thyme, salt and pepper in a large, shallow gratin dish. Roast until the tomatoes are collapsed and very juicy, 15 to 20 minutes.
Meanwhile, cook the spaghetti in large pot of boiling salted water until al dente. Drain well and transfer to a large serving bowl. Pour the hot tomato sauce over the spaghetti and toss well to coat. Taste and adjust the seasonings. Serve immediately.