This chunky sauce has texture that provides a boost of flavor to your ravioli.
Heat oil in a large saucepan over medium heat.
Add onion and garlic and season with salt and pepper; cook, stirring occasionally, until softened, about five minutes.
Add thyme, tomatoes, and marinara sauce.
Bring to a boil, then reduce heat and simmer, breaking up tomatoes with spoon, until sauce is thickened.