1. In a large bowl, combine the first five ingredients. Combine the egg, buttermilk, butter, mustard and hot pepper sauce; stir into the dry ingredients just until moistened. Fold in cheese.
2. Fill greased or paper-lined muffin cups two-thirds full. Bake at 400° for 15-20 minutes or until a toothpick inserted near the center comes out clean. Cool for 5 minutes before removing from pan to a wire rack. Serve warm. Refrigerate any leftovers. Yield: 1 dozen.