Turn the stove to medium-high heat now. Heat a large skillet over the burner. Add a little bit of oil or butter. Sear the beef strips until they are brown.

Remove the beef from the skillet and set aside. Add the sliced mushrooms and onions to the pan. Cook them until they become very soft and brown.

Stir in the garlic and cook for one minute. Sprinkle the flour over the vegetables in the pan. Stir it well to coat everything evenly now.

Pour the beef broth into the skillet slowly. Use your spoon to scrape the bottom. Let the liquid simmer until it starts to thicken.

Boil your egg noodles in the large pot. Follow the package directions for the best timing. Drain them well once they are tender.

Lower the heat on your skillet to low. Stir in the sour cream and cooked beef. Do not let the sauce boil after adding cream.

Toss the noodles into the creamy sauce now. Mix everything until the noodles are fully coated. Serve it hot to your hungry family.