Cook pasta as directed on package. Drain well.
Meanwhile, break up sausage in large skillet. Cook on medium-high heat 5 to 6 minutes. Remove sausage; drain fat. Rinse skillet and wipe clean.
Heat oil in same skillet on medium heat. Add onions, mushrooms and seasonings; cook and stir 5 minutes. Add cooked sausage; cook and stir 5 minutes longer.
Place pasta in large serving bowl. Add sausage mixture and cheese; toss to coat well. Serve with additional cheese, if desired.