Roasted garlic pasta sauce is a flavorful and aromatic pasta sauce that is made by roasting garlic cloves until they are soft, sweet, and caramelized. To make roasted garlic pasta sauce, you would typically start by roasting a head of garlic in the oven. Cut off the top of the head of garlic to expose the cloves, drizzle with olive oil, and wrap tightly in aluminum foil. Roast in a preheated oven until the garlic is soft and golden brown.