For the crust: in a food processor, pulse together the flour, sugar, salt, and cold butter, until chunks are pea size.
Begin adding 1 tablespoon of water at a time until the mixture resembles dough.
Form dough into a ball, wrap in plastic and chill in refrigerator for one hour.
After one hour, roll out dough onto lightly floured surface with floured rolling pin, to fit your pie dish.
Place rolled out dough into pie die, and lightly press so crust molds into the dish.
Set aside.
Preheat oven to 400 degrees F.
For the streusel:
Mix together the flour, oats, brown sugar, cinnamon, nutmeg, and salt.
Using a pastry blender, a couple of forks, or your fingers, cut the cold butter into the flour mixture until it resembles coarse crumbs.
Set aside.
For the filling:
Sprinkle apples with lemon juice.
Combine sugars, flour, cinnamon, nutmeg, and salt and add to apples and stir to mix.
Add vanilla and cream.
Melt butter in a large skillet.
Add apple mixture and cook until apples are soft and liquid is golden.
Pour into pie crust.
Top with streusel, making sure to distribute it evenly and all the way to the crust of the pie. Bake in preheated oven for 50-60 minutes, or until the pie is bubbly around the edges.
Let cool before serving.
Cut into slices and serve with cinnamon or vanilla ice cream. Enjoy!