01 - Boil pasta in salted water until al dente per package directions. Reserve 1/2 cup pasta water before draining.
02 - Heat olive oil in large skillet over medium heat. Sauté onion 3-4 minutes until translucent. Add garlic and cook 1 minute until fragrant.
03 - Stir in tomato paste and cook 1 minute. Add crushed tomatoes, sugar, oregano, red pepper flakes, salt, and pepper. Simmer uncovered 8-10 minutes, stirring occasionally.
04 - Reduce heat to low. Stir in heavy cream and Parmesan. Cook 2 minutes until sauce becomes creamy and well combined.
05 - Toss drained pasta into sauce, adding reserved pasta water as needed for desired consistency. Mix until fully coated. Serve hot garnished with fresh basil and extra Parmesan.