01 - Bring a large pot of salted water to a boil. Add pasta and cook according to package instructions until al dente. Drain, reserving ½ cup of the pasta water.
02 - While the pasta cooks, heat olive oil in a large skillet over medium heat. Add onion and sauté for 3 minutes until translucent. Add garlic and cook for 1 minute until fragrant.
03 - Stir in crushed tomatoes, sugar, oregano, and basil. Season with salt and pepper. Simmer uncovered for 10-12 minutes, stirring occasionally, until the sauce thickens slightly.
04 - Toss the drained pasta with the tomato sauce, adding a splash of reserved pasta water if needed to loosen the sauce and help it cling to the noodles.
05 - Serve hot, topped with grated Parmesan cheese and fresh basil leaves.