Arrange potato slices over top the beef mixture, working from the outside in and overlapping as needed. Bake, uncovered, for 40 to 45 minutes or until potato edges begin to brown. Remove from oven, sprinkle with cheese. Bake for 5 to 7 minutes more or until cheese is melted. Let stand for 10 to 15 minutes. Season to taste with additional salt and black pepper.