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Grandma’s Famous Apple Slab Pie – The Easiest, Most Beloved Dessert!

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Grandma’s Famous Apple Slab Pie – The Easiest, Most Beloved Dessert!

There’s something magical about recipes that have stood the test of time—especially when they come from grandma’s kitchen. And few recipes can compete with the comfort, simplicity, and soul-warming flavor of Grandma’s Famous Apple Slab Pie. This no-fuss dessert has been passed down through generations for good reason: it’s easy to make, feeds a crowd, and brings everyone back for seconds.

Unlike traditional deep-dish apple pies, a slab pie is baked in a large sheet pan, giving you thinner layers of golden, flaky crust and a generous spread of warmly spiced apple filling. It’s perfect for potlucks, holidays, family reunions, or any time you need a dessert that’s both impressive and approachable.

Let’s explore why this apple slab pie is so cherished—and how you can bring a piece of Grandma’s legacy to your table.


Why This Slab Pie Is So Beloved

  1. It’s Easy and Feeds a Crowd
    One of the biggest perks of slab pie is that it’s made in a sheet pan, meaning you can cut it into many small pieces—perfect for feeding a houseful of guests. Whether it’s a backyard BBQ or a holiday dinner, this pie always disappears quickly.
  2. Classic Flavor with a Homemade Touch
    With tender cinnamon-sugar apples nestled between two layers of buttery crust, the flavors in this dessert are timeless. The apples bake until soft and juicy, while the crust stays perfectly golden and crisp. It tastes just like grandma used to make—because it is the one she made.
  3. Less Fuss, More Pie
    If you’ve ever made a traditional pie and struggled with shaping or sealing the crust, this recipe is your new best friend. There’s no intricate crimping or fancy pie dish required—just roll out the dough to fit a sheet pan and layer it up.
  4. It’s a Blank Canvas
    Love caramel? Drizzle some over the top. Want to make it more tart? Use Granny Smith apples. You can easily customize this slab pie with nuts, raisins, or a scoop of vanilla ice cream on top.

Grandma’s Apple Slab Pie Recipe

Prep Time: 25 minutes
Cook Time: 40 minutes
Cooling Time: 20 minutes
Total Time: 1 hour 25 minutes
Serves: 15–20

Ingredients

For the crust:

  • 2 1/2 cups all-purpose flour
  • 1 cup (2 sticks) unsalted butter, cold and cubed
  • 1/4 cup granulated sugar
  • 1/2 teaspoon salt
  • 6–8 tablespoons ice water

Or use two sheets of refrigerated pie crusts, rolled out to fit a 10×15-inch jelly roll pan for an easier version.

For the filling:

  • 6–7 cups peeled, thinly sliced apples (such as Granny Smith, Honeycrisp, or a mix)
  • 1/2 cup granulated sugar
  • 1/4 cup brown sugar
  • 1 1/2 teaspoons ground cinnamon
  • 1/4 teaspoon ground nutmeg
  • 2 tablespoons all-purpose flour
  • 1 tablespoon lemon juice

For the topping:

  • 1 tablespoon butter, melted
  • 1 tablespoon sugar mixed with 1/2 teaspoon cinnamon

Instructions

  1. Make the Crust:
    In a large bowl, mix flour, sugar, and salt. Cut in the cold butter using a pastry blender or fork until the mixture resembles coarse crumbs. Gradually add ice water, 1 tablespoon at a time, until the dough comes together. Divide in half, wrap in plastic wrap, and chill for at least 30 minutes.
  2. Prepare the Filling:
    In a large bowl, combine sliced apples, granulated sugar, brown sugar, cinnamon, nutmeg, flour, and lemon juice. Toss until apples are well coated.
  3. Assemble the Pie:
    Preheat the oven to 375°F (190°C). Roll out one half of the dough into a rectangle large enough to fit a 10×15-inch jelly roll pan. Press into the bottom and slightly up the sides. Spread the apple mixture evenly over the crust.