Increase the heat to 425°F, then in a large shallow baking dish, add the tomatoes, basil stems, shallot, garlic, and optional red chilis or red pepper flakes. Season with salt and pepper, and drizzle with olive oil.
5 cups Sungold tomatoes, 5 stems basil, 6-8 cloves garlic, 1 medium shallot, ¼ - ½ teaspoon red pepper flakes, 5 tablespoons olive oil, 1 teaspoon kosher salt, ¼ teaspoon black pepper
Roast the tomatoes until they begin to pop and have softened considerably, about 20- 25 minutes. Remove from the oven, and remove the basil and discard. Set aside some of the tomatoes for topping later.
After you've removed the basil and set aside a few of the tomatoes, place the remaining roasted tomatoes, shallots, chilis, garlic, and oil in a food processor or blender and process or blend until smooth. If you prefer, you can skip this step.
Meanwhile, While the tomatoes are roasting, bring a large pot of heavily salted water to a boil, and prepare your noodles of choice. Cook them 1-2 minutes under the package directions for al dente, as they will continue to cook in the sauce. Make sure to set aside at least 1 cup of pasta water. More is always better than not enough! We like to save some to reheat leftovers as well.