How to Make It
Melt butter in a cast-iron skillet over medium heat until bubbling. Stir in flour, and then add whole milk, whisking until flour is completely incorporated. Stir constantly until the sauce has thickened.
Add pepper and strips of dried beef to sauce mixture, stirring until pepper is incorporated and beef is evenly coated. Spoon over Texas toast or biscuit halves; serve warm and top with additional ground pepper, if desired.