12 oz. dried fettuccine
2 tbsp. chopped fresh Italian parsley for garnish
2 tbsp. Dijon mustard
8 oz. mascarpone cheese
1 cup dry Marsala wine
2 cloves garlic, minced
1 pound cremini mushrooms, sliced
1 onion, chopped
2 tbsp. butter
2 tbsp. olive oil
Salt and freshly ground black pepper
1 1/2 pounds boneless skinless chicken breasts, cut into strips