In a large bowl, combine the first five ingredients. Cut in butter until mixture resembles coarse crumbs. Stir in buttermilk just until moistened. Gently fold in the cheese and apples. Turn onto a floured surface; knead 10 times.
Pat into a 9-in. circle. Cut into eight wedges. Separate wedges and place on a greased baking sheet.
Bake at 450° for 12-15 minutes or until golden brown.