In skillet, cook sausage over medium heat until no longer pink in centre, 15 to 20 minutes. Drain well; cut into thin round slices.
Meanwhile, in large pot of boiling water, cook pasta until tender but firm; drain and return to pot.
In nonstick pan, heat oil over medium heat; cook onion until tender, about 5 minutes. Add garlic, red peppers and mushrooms; cook, stirring often for 5 minutes. Add tomatoes, basil and oregano; simmer, uncovered, for 5 minutes. Add cooked sausage, and pepper to taste. Pour over pasta; toss to mix. Sprinkle with parsley and Parmesan; toss again. Pass extra Parmesan at the table.
Per Serving: 396 calories, 17 g protein, 13 g total fat, 4 g saturated fat, 23 mg cholesterol, 53 g carbohydrate, 5 g fibre, 624 mg sodium, 522 mg potassium