Melt the butter in a large skillet over medium heat. Whisk in the flour and cook for 2-3 minutes until the flour turns golden brown.
Stir in the bouillon powder, garlic powder, and black pepper.
While whisking constantly, gradually pour in the beef broth. Bring to a simmer and cook until it reaches your desired thickness. If you accidentally make it too thick, just add some water to loosen it back up.
Nutrition information is calculated using an ingredient database and should be considered an estimate.