01 -
Bring a large pot of water to a boil. Add egg noodles and cook until tender according to package directions, approximately 8 to 10 minutes. Drain well and set aside.
02 -
Heat a large skillet over medium heat. Add ground beef and cook, breaking into crumbles, until browned and fully cooked, about 6 to 8 minutes. Drain excess fat and transfer beef to a separate plate.
03 -
In the same skillet, melt butter over medium heat. Whisk in flour and cook, stirring constantly, for about 2 minutes until a smooth roux forms without browning.
04 -
Gradually pour in chicken broth while whisking continuously to prevent lumps. Cook until the mixture thickens, 3 to 4 minutes. Slowly add milk, whisking constantly, and continue to cook until the sauce is thick and creamy, about 5 to 7 minutes.
05 -
Add garlic powder, onion powder, salt, and black pepper to the sauce. Whisk to combine evenly.
06 -
Reduce heat to low. Return cooked noodles and browned beef to the skillet. Stir gently to fully incorporate all components and heat through.
07 -
Fold sour cream into the mixture just until the sauce becomes rich and creamy. Do not allow to boil once sour cream has been added.
08 -
Serve hot, optionally accompanied by steamed vegetables or toasted bread.