Preheat the oven to Spray a pie dish or 9 inch cake pan with cooking spray and set asideIn a medium bowl, whisk together the flour, baking powder, and sugar. Cut in the butter using a pastry blender or two knives, until the pieces are no larger than pea sized. Mix the egg and milk together, then pour the wet ingredients into the dry ingredients. Mix until just combined. Pat half of the dough into the prepared baking dish. Toss the chopped apples with the sugar and cinnamon and spread over the dough. Pat the remaining dough over the top of the apples (it's okay if it is imperfect, just do your best!). Bake 40 minutes, or until lightly browned on top. Remove and let cool slightly before topping.