Preheat oven to 350 degrees F (175 degrees C).

In a bowl, mix together the flour, baking powder, and salt.

Cut in the butter until the mixture resembles coarse crumbs.

Add the egg and milk to the dry ingredients and mix well to form a dough.

Press the dough into the bottom and up the sides of an 11 1/2 x 7 1/2 inch baking dish.

Peel and slice the apples.

Arrange the apple slices in a spiral pattern over the dough, starting from the outside and working inwards.

In a separate bowl, mix together the sugar, cinnamon, and flour for the topping.

Cut in the softened butter until the topping is crumbly.

Sprinkle the topping evenly over the apples.

Bake for approximately 40 minutes, or until the apples are tender and the crust is golden brown.

For extra browning, broil for the last few minutes, watching carefully to prevent burning.