Bow Ties with Sausage in Cream Sauce

1 lb sweet sausage
1 lg. onion, finely chopped
1/2 lb sliced mushrooms
2 cloves crushed garlic
2/3 cup white wine
1 can crushed tomatoes
1/2 cup light cream

Remove sausage from casing and cut into bite size pieces. Fry and remove from pan. Add extra olive oil if needed and saute onions and mushrooms until soft; add garlic. Add white wine and reduce. Return sausage and add tomatoes. Simmer 10-15 minutes. Add cream, salt and pepper and cook another 3 minutes. Serve over bow ties with grated parmesan cheese.