1 lb. wide egg noodles
4 Tbsp. (1/4 cup) butter, divided
1.5 lbs. thinly-sliced steak (I used top sirloin, but just about any will work)
salt and pepper
1 white or yellow onion, thinly sliced
4 cloves garlic, minced
1 lb. sliced mushrooms (I used a mix of button and baby bella mushrooms)
1/2 cup dry white wine (or you can substitute in more beef broth)
1.5 cups beef broth
1 Tbsp. Worcestershire sauce
3 Tbsp. flour
1/2 cup plain Greek yogurt or light sour cream
(optional garnish) chopped fresh parsley