A classic combination of pie crust bottom and apple crumble topping.
Preheat oven to 375F.
Add flour, salt and butter into a mixing bowl. Use a pastry cutter or two knives to cut into you have mixture the texture of coarse meal.
One spoonful at a time, sprinkle with cold water and mix until the dough holds together and cleans away from the bowl easily.
Lightly flour a surface and lightly flour a rolling pin.
Roll dough , using more flour if the dough begins to stick.
Transfer dough to a 9 inch pie plate, fluting the edges.
Grease some butter and flour into your uncooked pie crust.
In a medium bowl mix apples with sugar, cinnamon, flour and sea salt.
Add filling into crust.
Mix together crumble toppings in your used bowl and sprinkle crumble over filling.
Bake pie for 30-45 minutes until golden brown edges appear.