- Prepare pasta according to directions on package. Drain pasta in a colander; cover with kitchen towel and set aside. Do not rinse pasta.
- In a large saucepan heat the butter over medium heat and add onion, garlic and bell pepper andsaute' until softened and translucent, about 3 to 4 minutes. Add sausage andsaute' until browned, about 5 minutes. Drain grease.
- Add cream and, if using, peas and simmer over very low heat until thickened, about 10 minutes, stirring constantly. Season with grated nutmeg, salt and pepper.
- Add cooked pasta to sauce and stir well. Simmer on low heat a few minutes. Sprinkle with Parmesan cheese and parsley and stir again. Serve immediately.