In a food processor or blender add 2 cups flour, salt, 1 cup butter and ice water. Pulse until dough forms. Press the dough onto the bottom of the 9x13" dish and bake for 20-25 minutes, or until the sides become golden brown.
In the meantime, combine peeled and sliced apples with 1 cup sugar and cinnamon. toss to coat evenly. Spread onto the baked crust.
Again using a food processor or blender, pulse the remaining flour, sugar and butter until it becomes fine crumbs. Spread onto apple mixture.
Bake for 1 hour or until golden.
Store in an airtight container.
Recipe by Down Home Inspiration at https://www.downhomeinspiration.com/apfelkuchen-german-apple-cake/