3/4 lb. mushrooms, sliced
2 medium onion, chopped
1/2 lb. sweet Italian sausage
6 tbsp. butter
2 tbsp. vegetable oil
1 c. heavy cream
1 lb. Pappardelle or Fettuccine
1/2 c. freshly grated Parmesan cheese

Saute onions and sausage in 2 tablespoons of the butter and oil for about 5 minutes. Add mushrooms for another 5 minutes. Add mushrooms for another 5 minutes. Melt remaining butter and 1/2 of the cream in a separate bowl. Add the rest of the cream to the mushrooms and sausage. Cook uncovered until liquid thickens (about 5 minutes). Toss mixture with cream mixture in with cooked pasta, then add cheese.