Preheat oven to 350. Butter a large pie or quiche pan.
Arrange the apples into the buttered pan and sprinkle with the cinnamon.
In a small bowl, add the egg and sugar and mix together with a fork. Add the melted, cooled butter to the egg/sugar mixture and mix well. Pour into the flour and mix until a smooth, glistening batter forms.
Pour the batter over the apples and spread a little with the back of the spoon. Don't be fussy or perfect about it. The beauty is in its imperfection.
Sprinkle with the sugar in the raw. Bake 35-40 minutes until very golden and fruit is bubbling.
Eat with vanilla ice cream, powdered sugar or fresh whipped cream.
Stuff your face.