French Apple Cobbler

We have some Granny Smith apples on our counter.  Yesterday I thought, for fun, that I would make a cobbler.  I looked for a recipe online, found this one, and made it.  I like the idea of this cake topping.  It came out very sweet and the apples had a bit of a strange texture (I didn't peel them and I doubt that I cut them too small.)  Anyway, it was a nice change to have dessert.

Filling:
5 cups apples, peeled, sliced
3/4 cup sugar
2 T flour
1/2 tsp cinnamon [maybe make this 1 tsp?]
1/4 tsp salt
1 tsp vanilla extract [maybe make this 1/2 tsp?]
1/4 cup water
1 T butter, softened

Topping:
1/2 cup flour, sifted
1/2 cup sugar [I wonder if 1/4 cup would be enough?]
1/2 tsp baking powder
1/4 tsp salt
2 T butter, softened
1 egg, slightly beaten

In a large bowl combine apples, sugar, flour, cinnamon, salt, vanilla, and water.  Dump into a lightly buttered 9x9 square baking dish.  Pat cut-portions of butter on top of the apples, evenly. For topping, stir together the flour, sugar, baking powder, salt, butter and egg.  Cream until smooth, using a wooden spoon.  Drop batter on top of the apple filling, distributing evenly throughout as it will meld together during baking.  Bake at 375 degrees for 35-40 minutes or until apples are done and crust is browned.  Serve warm with cream or ice cream.

Source: Rattray, Diana.  "French Apple Cobbler Recipe".  SouthernFood.About.com