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Perfect Apple Slab Pie

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A golden, flaky lattice-crust apple pie baked in a sheet pan, filled with tender spiced apples and finished with a glossy caramelized glaze. This crowd-pleasing dessert is perfect for holidays, gatherings, or just a cozy night in!

Ingredients

Units Scale

For the Crust:

  • 2 1/2 cups all-purpose flour
  • 1 tsp salt
  • 1 cup unsalted butter, cold and cubed
  • 6 tbsp ice water
  • 1 egg (for egg wash)

For the Apple Filling:

  • 6 large apples (Granny Smith or Honeycrisp), peeled and sliced
  • 3/4 cup granulated sugar
  • 1/4 cup brown sugar
  • 1 tbsp lemon juice
  • 1 1/2 tsp cinnamon
  • 1/4 tsp nutmeg
  • 1/4 cup cornstarch
  • 2 tbsp butter, melted

For the Glaze:

  • 1/2 cup powdered sugar
  • 1 tbsp milk
  • 1/2 tsp vanilla extract

Instructions

  1. Prepare the Crust:

    • In a large bowl, mix flour and salt.
    • Cut in butter until the mixture resembles coarse crumbs.
    • Gradually add ice water, mixing until the dough forms.
    • Divide into two discs, wrap in plastic, and chill for 30 minutes.
  2. Preheat Oven:

    • Set to 375°F (190°C).
    • Lightly grease a 9×13-inch baking sheet.
  3. Make the Filling:

    • In a bowl, toss apple slices with sugars, lemon juice, cinnamon, nutmeg, and cornstarch.
    • Let sit for 10 minutes to release juices.
  4. Assemble the Pie:

    • Roll out one dough disc to fit the bottom of the baking sheet.
    • Spread the apple mixture evenly over the crust.
    • Drizzle with melted butter.
    • Roll out the second dough disc and cut into strips for a lattice pattern or cover fully, crimping the edges to seal.
  5. Bake:

    • Brush with egg wash and bake for 40-45 minutes, or until the crust is golden brown and the filling is bubbly.
  6. Add Glaze:

    • Mix powdered sugar, milk, and vanilla in a bowl.
    • Drizzle over the pie while slightly warm.
  7. Serve & Enjoy:

    • Let cool before slicing into squares.

Notes

  • Best Apples for Pie: Granny Smith for tartness, Honeycrisp for sweetness, or a mix of both for balance.
  • Make-Ahead Tip: The pie crust can be prepared a day in advance and refrigerated.
  • Serving Suggestion: Pair with vanilla ice cream or a dollop of whipped cream.