Apple Slab Pie (Easy Party Dessert You Can Slice Into Squares)
Apple slab pie is the perfect crowd-pleasing dessert for gatherings. Think of it as a classic apple pie baked in a large rimmed sheet pan, then cut into neat squares—easy to serve, easy to share, and always a hit.

Ingredients
For the pie crust (base)
- 3 3/4 cups all-purpose flour (about 470 g)
- 1 1/2 tablespoons sugar
- 1 1/2 teaspoons table salt
- 3 sticks unsalted butter, very cold and cut into small cubes (about 340 g total)
- 3/4 cup ice-cold water (use as needed)
For the apple filling
- 3 1/2 to 4 lb apples, peeled, cored, and chopped into 1/2-inch pieces (about 10 cups)
- A squeeze of lemon juice
- 2/3 to 3/4 cup sugar (adjust to taste and apple sweetness)
- 3 tablespoons cornstarch
- 1 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- 1/4 teaspoon ground allspice
- 1/8 teaspoon table salt
To finish
- 2 tablespoons heavy cream, or 1 egg beaten with 1 tablespoon water (for egg wash)
Instructions
1) Make the pie dough
- In a large, wide bowl, combine the flour, sugar, and salt.
- Add the cold butter pieces and toss until coated in flour.
- Using your fingertips (or a pastry blender/two knives), work the butter into the flour until the pieces are slightly larger than peas and the mixture looks crumbly.
- Pour in 1/2 cup of the ice water and mix with a rubber spatula until the dough starts to clump.
- If it still looks dry, add more water a little at a time until the dough holds together. Use your hands briefly to form a soft, slightly shaggy ball.
- Divide the dough into two portions, making one slightly larger (this will be the bottom crust).
- Wrap each piece in plastic wrap and press into a rectangle about 1 inch thick.
- Refrigerate for at least 2 hours before rolling.
2) Prepare the apple filling
- Add the chopped apples to a large bowl and toss with lemon juice.
- In a separate bowl, mix together sugar, cornstarch, cinnamon, nutmeg, allspice, and salt.
- Sprinkle the dry mixture over the apples and stir until everything is evenly coated. Set aside.
3) Assemble the apple slab pie
- Preheat the oven to 375°F (190°C).
- Line a 10 x 15-inch rimmed baking sheet (about 1 inch deep) with parchment paper. (A slightly smaller pan is fine; you may have a bit of extra dough.)
- On a floured surface, roll the larger dough portion into an 18 x 13-inch rectangle.
- Transfer it to the pan, letting the dough drape up and over the edges. Press gently into the corners and sides.
- Chill the pan in the refrigerator or freezer while you roll the second piece of dough into a 16 x 11-inch rectangle.
4) Fill, top, and vent
- Remove the lined crust from the fridge/freezer and spread the apple mixture (including juices) evenly over the bottom crust. It will look piled high, but the apples will shrink as they bake.
- Lay the top crust over the apples.
- Trim so the top and bottom crusts extend about 3/4 inch past the pan edge, then press firmly to seal.
- Brush the surface with heavy cream or egg wash.
- Using a sharp knife, cut multiple 1-inch slits across the top crust to release steam.
5) Bake and cool
- Place the sheet pan on a larger baking tray to catch any bubbling juices.
- Bake for 40–45 minutes, until the crust is deep golden brown and the filling is bubbling through the slits.
- Cool on a wire rack for at least 45 minutes before slicing into squares.
Serve
Cut into squares and enjoy this shareable apple slab pie—ideal for parties, potlucks, and holiday dessert tables.


