01 -
Bring a large pot of salted water to a boil. Add the egg noodles and cook for 7–9 minutes or according to package directions until tender. Drain well and toss gently with a small amount of butter to prevent sticking. Set aside.
02 -
Heat a large skillet over medium heat. Add ground beef, breaking it up with a spoon. Cook for 6–8 minutes until well-browned and no pink remains. Drain excess fat and transfer the beef to a plate.
03 -
In the same skillet, melt the butter over medium heat. Sprinkle in the flour and stir constantly for approximately 2 minutes to form a smooth, pale roux.
04 -
Slowly pour in beef broth, whisking continuously to ensure a lump-free mixture. Cook, stirring, until the sauce begins to thicken.
05 -
Gradually stir in milk. Continue to stir for 5–7 minutes until the sauce is silky and coats the back of a spoon.
06 -
Stir in garlic powder, onion powder, black pepper, and salt. Taste and adjust seasoning as needed.
07 -
Return the cooked noodles and browned beef to the skillet. Stir until evenly coated with the sauce.
08 -
Reduce heat to low. Gently fold in the sour cream until fully incorporated and the sauce is glossy. Take care not to boil after adding sour cream.