01 - Bring a large pot of salted water to a boil. Cook pasta according to package instructions until al dente. Reserve ¼ cup of cooking water, then drain pasta.
02 - Heat olive oil in a large skillet over medium heat. Add chopped onion and sauté until translucent, about 3 to 4 minutes. Stir in minced garlic and cook for an additional minute.
03 - Add crushed tomatoes, sugar, salt, pepper, and oregano to the skillet. Simmer gently for 8 to 10 minutes, stirring occasionally.
04 - Reduce heat to low, stir in heavy cream, and simmer for 2 to 3 minutes until sauce is creamy.
05 - Add drained pasta and reserved cooking water to the sauce. Toss thoroughly to coat pasta evenly.
06 - Remove skillet from heat. Stir in torn basil leaves and grated Parmesan cheese.
07 - Serve immediately, garnished with additional Parmesan and basil as desired.