Beef and mushroom bolognese starts with beef, mushrooms, fennel, and ground red pepper simmered with diced tomatoes before being tossed with pasta. Serve with grated Parmesan cheese if desired.
Cook pasta according to package directions.
Meanwhile, spray large skillet with cooking spray; heat over medium-high heat. Add beef, onion, salt and pepper; cook 5 to 6 minutes or until beef is crumbled and no longer pink, stirring occasionally. Add garlic; cook 1 minute more or until fragrant.
Add fennel and mushrooms. Cook 3 to 5 minutes or until vegetables are tender. Stir in tomato paste. Add undrained tomatoes; reduce heat and simmer 5 minutes. Stir in cooked pasta; simmer 2 minutes more or until hot.