Prep: 20 minutes Cook: 10 minutes Makes: 4 servings
If desired, partially freeze beef for easier slicing. Trim fat from meat. Thinly slice meat against the grain into bite-size strips.
In a small bowl stir together sour cream and flour. Stir in 1/2 cup beef broth and1/4 teaspoon black pepper; set aside.
In a large skillet cook and stir the meat, mushrooms, onion, and garlic in hot butter over medium-high heat for 5 minutes or until desired doneness. Drain off fat.
Stir sour cream mixture into skillet. Cook and stir until thickened and bubbly. Cook and stir for 1 minute more. Serve over noodles.