Preheat oven to 400° , and line a baking sheet with parchment
Sift flour, baking powder, sugar, cinnamon and salt and into large mixing bowl
Add butter and using pastry cutter, fork, and/or fingers combine until mixture is crumbly
Add beaten egg and milk and form into sticky dough
Fold in diced apple
Turn out onto floured surface, knead a few times and form into ball. Pat out into circle, then roll to 1-1/4" thick
Using round biscuit cutter, cut out scones and place on baking tray
Brush tops of scones with beaten egg and bake for 10-12 minutes or until risen and golden brown
While scones are in over, melt 1/4 cup butter over low heat and combine sugar, cinnamon and pinch of salt for topping.
Let scones cool for a few minutes then brush tops with melted butter and sprinkle with cinnamon sugar, using a small strainer is helpful