1 pound cooked egg noodles
1/4 cup flat-leaf parsley, chopped
1 cup sour cream
1/3 cup all-purpose flour
1 cup beef stock
1 tbsp. Dijon mustard
1 tbsp. Worcestershire sauce
1/2 tsp. black pepper
1 tsp. salt
1 can cream of mushroom soup
1 pound sliced mushrooms
2 garlic cloves, minced
1 yellow onion, diced
2 pounds cubed beef stew meat