Brown the ground beef in a large skillet over medium heat.
Drain excess fat and add chopped onion and minced garlic; sauté until translucent.
Add sliced mushrooms and cook until tender.
Stir in flour and cook for 1 minute.
Gradually add beef broth and Worcestershire sauce, stirring constantly.
Bring to a simmer and let it thicken.
Reduce heat and stir in sour cream until well combined.
Season with salt and pepper to taste.
Cook egg noodles according to package instructions.
Serve the beef stroganoff over the cooked noodles.