In a mixing bowl, combine flour and sugar for the crust. Cut in the cold butter until the mixture resembles coarse crumbs. Gradually add ice water, mixing just until dough comes together. Press into a pie dish.
In another bowl, mix the apples, sugar, cinnamon, and nutmeg for the filling. Pour into the crust.
For the crumble topping, combine flour, brown sugar, and melted butter. Sprinkle over the apple filling.
Bake for 45 minutes or until the topping is golden brown and the filling is bubbly. Let cool before serving.