Meanwhile, heat oil in a large skillet over medium-high heat.
Add onion and cook until fragrant and starting to soften, about 2 minutes.
Stir in flour and cook, stirring, until it is well absorbed, about one minute.
Add wine, broth and mustard; stir and scrape up any browned bits.
Stir in sour cream, salt and pepper.
Drain the pasta and add to the sauce, tossing it all together.
Sprinkle with parsley, if desired.
- Daily Values (DVs) are the recommended amounts of nutrients to consume each day.
(-) Information is not currently available for this nutrient.