In a large skillet, cook sausage, mushrooms, onion and garlic over medium heat until sausage is no longer pink and vegetables are tender, 5 to 7 minutes.
Stir in flour, salt and paprika until blended; gradually stir in broth. Bring to a boil, stirring constantly; cook and stir until thickened, turn off heat.
Stir in sour cream and serve with noodles, sprinkle with parsley.