A few years ago, a dear friend and great cook, made this dish for me and my husband, and it tasted like food from a fine Italian restaurant. I had never added cream to my sauce before and wasn't quite sure if I'd like it...I had no need to be concerned! It was delicious and quickly became a favorite of the whole family!
Bring a large pot of lightly salted water to a boil. Cook pasta in boiling water for 8 to 10 minutes, or until al dente; drain.
Heat oil in a large, deep skillet over medium heat. Cook sausage and pepper flakes until sausage is evenly brown. Drain any extra grease from the pan. Then, stir in onion and garlic, and cook until onion is tender. Stir in tomatoes, cream, and salt. Simmer until mixture thickens, 8 to 10 minutes.
Stir cooked pasta into sauce, and heat through. Sprinkle with parsley and a little freshly grated parmesan.