01 - Bring a large pot of salted water to a rolling boil.
02 - Heat olive oil in a large skillet over medium heat. Add chopped garlic and sauté for 30 seconds until fragrant, being careful not to burn it.
03 - Pour in crushed tomatoes, then add sugar, dried oregano, red pepper flakes, salt, and black pepper. Simmer for 8–10 minutes, stirring occasionally, until the sauce slightly thickens.
04 - Add ravioli to the boiling water and cook according to package directions, typically 3–4 minutes, until they float to the surface. Drain gently to preserve shape.
05 - Stir chopped basil into the sauce, then add the drained ravioli. Fold gently to coat evenly. Serve immediately topped with grated Parmesan and fresh basil leaves.