Preheat your oven to 400°F (200°C). Line a large rimmed baking sheet with parchment paper or lightly oil it. Spread the cherry tomatoes out in a single layer so they roast rather than steam.
2 pints cherry tomatoes
Drizzle the cherry tomatoes with the olive oil. Scatter the sliced garlic over the top, then sprinkle with kosher salt, black pepper, crushed red pepper flakes (if using), and dried oregano or Italian seasoning. Toss gently so the tomatoes and garlic are evenly coated, letting some of the garlic tuck under the tomatoes to prevent burning.
2 pints cherry tomatoes, 4 tablespoons extra-virgin olive oil, 5-6 cloves garlic, 1 teaspoon kosher salt, 1/2 teaspoon black pepper, 1/2-1 teaspoon crushed red pepper flakes, 1 teaspoon dried oregano
Roast the seasoned cherry tomatoes in the preheated oven for 18–22 minutes, or until they are very soft, blistered, and releasing their juices. Some tomatoes should be burst and the pan should look saucy. If the garlic starts to brown too quickly, reduce the oven temperature slightly or toss the tomatoes halfway through.
2 pints cherry tomatoes, 5-6 cloves garlic
Remove the baking sheet from the oven and drizzle the balsamic vinegar over the hot tomatoes. Gently stir, then use the back of a spoon or a fork to lightly press on some of the tomatoes to release more juice, creating a rustic roasted cherry tomato sauce on the tray.
2 pints cherry tomatoes, 2 tablespoons balsamic vinegar
While the tomatoes roast, bring a large pot of well-salted water to a boil. Add the pasta and cook according to package directions until al dente. Before draining, scoop out about 1 cup of the pasta cooking water and set aside. Drain the pasta.
12 ounces pasta
Transfer the hot drained pasta to a large serving bowl. Scrape all of the roasted cherry tomatoes, garlic, juices, and oil from the baking sheet into the bowl with the pasta. Toss gently, adding 2–3 tablespoons of reserved pasta water to help the sauce coat the noodles and become silky.
2 pints cherry tomatoes, 12 ounces pasta, 2-3 tablespoons reserved pasta cooking water
While the pasta is still hot, add the torn basil leaves, mozzarella cubes, and grated Parmesan or Pecorino Romano. If using, add the butter as well. Toss until the mozzarella just begins to soften and the basil is slightly wilted, without fully cooking it.
1 cup fresh basil leaves, 8 ounces fresh mozzarella, 1/4 cup Parmesan or Pecorino Romano, 1 tablespoon butter
Taste the pasta and adjust the seasoning with more salt, black pepper, or crushed red pepper flakes if desired. If the flavors taste a bit flat, brighten them with an extra splash of balsamic vinegar or a small squeeze of lemon juice (optional).
1 teaspoon kosher salt, 1/2 teaspoon black pepper, 1/2-1 teaspoon crushed red pepper flakes, 2 tablespoons balsamic vinegar
Serve the pasta immediately, topped with extra grated Parmesan and a few fresh basil leaves. For added texture, sprinkle with toasted breadcrumbs or pine nuts if you like.
1 cup fresh basil leaves, 1/4 cup Parmesan or Pecorino Romano