Preheat oven 425°F.
Place a large pot filled with water over high heat and bring up to a boil to cook the pasta. Once boiling, add some salt and the pasta, and cook until al dente according to package directions. Reserve about a 1/2 cup of the cooking liquid before draining the pasta.
While the water is coming up to a boil to cook the pasta, place the tomatoes on a cookie and grate the garlic over them.