Hubby John and I really like this.
Boil pasta as per directions.
Remove casings from sausage then crumble and brown in sprayed skillet w/ 1 T marg. Add chopped red pepper and saute. Add chopped onion and fresh mushrooms. Season w/ italian seasoning, basil, garlic powder/salt, red chile pepper flakes, salt, pepper. I stirred in half a jar of Safeway brand Tomato Alfredo sauce. Drain pasta and mix all together. Top w/ diced tomatoes and parmesan.