01 - Bring a large pot of generously salted water to a rolling boil. Add the pasta and cook according to package directions until al dente. Drain through a colander, reserving ½ cup of the starchy pasta water. Set aside.
02 - While the pasta cooks, warm the olive oil in a large skillet over medium heat. Add the chopped onion and sauté for about 3 minutes until soft and translucent. Stir in the minced garlic and cook for 1 minute until fragrant, taking care not to let it brown.
03 - Pour in the crushed tomatoes, sugar, dried oregano, and dried basil. Season with salt and freshly ground black pepper to taste. Stir to combine and let the sauce simmer uncovered for 10 to 12 minutes, stirring occasionally, until it thickens slightly and the flavors meld together.
04 - Add the drained pasta to the skillet with the tomato sauce. Toss everything together thoroughly, adding small splashes of the reserved pasta water as needed to loosen the sauce and help it cling evenly to each strand or piece of pasta.
05 - Transfer to warm serving plates or bowls. Finish with a generous shower of freshly grated Parmesan cheese and scatter fresh basil leaves over the top. Serve immediately while hot.