Preheat your oven to 375°F (190°C).
Grease a baking sheet or line it with parchment paper.
Prepare the Pie Crust:
In a large mixing bowl, combine the flour and salt.
Cut in the cold, cubed butter using a pastry cutter or fork until the mixture resembles coarse crumbs.
Gradually add ice water, 1 tablespoon at a time, mixing until the dough comes together.
Roll out the dough on a lightly floured surface to fit your baking sheet.
Transfer the dough to the prepared baking sheet, pressing it into the edges and trimming any excess.
Make the Apple Filling:
In a large bowl, combine the sliced apples, granulated sugar, brown sugar, flour, cinnamon, nutmeg, lemon juice, and vanilla extract.
Mix until the apples are evenly coated.
Spread the apple filling evenly over the prepared pie crust.
Prepare the Crumb Topping:
In a medium bowl, combine the flour, brown sugar, and cinnamon.
Cut in the cold, cubed butter using a pastry cutter or fork until the mixture resembles coarse crumbs.
Sprinkle the crumb topping evenly over the apple filling.
Bake the Pie:
Bake in the preheated oven for 45-50 minutes, or until the topping is golden brown and the apples are tender.
Remove from the oven and let the pie cool on a wire rack.
Serve:
Cut the pie into squares and serve warm or at room temperature.
Optionally, serve with a scoop of vanilla ice cream or a dollop of whipped cream.
Enjoy this Apple Crumb Slab Pie for a delicious and comforting dessert that’s perfect for any occasion!