Combine flour, baking powder, salt and sugar. Cut in the butter. Gradually add milk and work it gently with your hands until the dough holds together. Divide in half. Roll one half at a time into a circle like a pie dough. Cut into 6 wedges. Place a peeled and cored whole apple into the center and wrap with the dough. Place on a lightly greased cookie sheet and bake at 375 degrees for 1 hour or until apples are soft. It's great warmed, served with warm milk and sprinkled with sugar.