Delicious Apple Slab Pie

The best slab pie I ever made happened completely by accident one Thanksgiving when my traditional pie dough refused to cooperate. Instead of fighting it into rounds, I rolled everything out into a rectangle, shoved it in a baking sheet, and somehow ended up with the most stunning dessert Ive ever pulled from my oven. Now I make slab pies intentionally because something about that higher filling-to-crust ratio just works better.

Last summer I brought this to a potluck and watched it disappear in record time while someone actually went back for thirds before I could even sit down with my own plate. My neighbor asked for the recipe right then and there, and now shes the one everyone expects to bring slab pie to every gathering.

Ingredients

• 3 1/2 cups all-purpose flour: Gives the crust structure without becoming tough when rolled thin
• 1 tablespoon granulated sugar: Just enough to help the crust brown beautifully
• 1 1/2 teaspoons salt: Balances sweetness and enhances butter flavor
• 1 1/2 cups cold unsalted butter, cubed: Cold butter creates those magical flaky layers we all want
• 1/2 cup ice water: Bind the dough without making it tough, add more only if absolutely necessary
• 8 medium apples: A mix of tart and sweet gives the best flavor complexity
• 2/3 cup granulated sugar and 1/3 cup light brown sugar: Brown sugar adds caramel notes while white provides crisp sweetness
• 1 1/2 teaspoons cinnamon and 1/4 teaspoon nutmeg: Classic warm spices that make everything taste like fall
• 3 tablespoons cornstarch: Thickens those apple juices so you get a slice that holds its shape
• 2 teaspoons lemon juice: Brightens everything and keeps apples from browning too fast
• 1 egg and 1 tablespoon milk: Creates that gorgeous golden finish that makes people ask how you did it

Instructions

Preheat your oven and pan:

Get your oven to 400°F and line a 10x15-inch rimmed baking sheet with parchment paper so nothing sticks later.

Make the crust dough:

Whisk flour, sugar, and salt in a large bowl, then cut in cold butter until you see coarse crumbs forming throughout. Drizzle in ice water gradually, mixing just until the dough holds together when you squeeze it.

Divide and chill the dough:

Split dough into two pieces, making one slightly larger for the bottom crust. Let them rest in the refrigerator while you prepare the filling.

Prepare the apple filling:

Toss sliced apples with both sugars, cinnamon, nutmeg, salt, cornstarch, and lemon juice until every piece is evenly coated.

Roll out the bottom crust:

On a floured surface, roll the larger dough piece into a rectangle that covers the bottom and sides of your pan. Gently lift it in and press into corners and edges.

Layer in the apples:

Pour the apple mixture evenly over the bottom crust, arranging them so they lie relatively flat for easier top crust placement.

Add the top crust:

Roll out the remaining dough and place it over the apples. Trim any overhang, pinch the edges to seal everything in, and cut small slits across the top so steam can escape while baking.

Brush and bake:

Whisk egg with milk and brush the entire top crust, then sprinkle with coarse sugar if you want that extra sparkle. Bake for 35 to 40 minutes until deeply golden and the filling bubbles up through those steam vents.

Cool before serving:

Let the slab pie rest for at least 30 minutes so the filling sets properly, then slice into squares and serve.

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My mom always said the secret ingredient is patience, especially when waiting for pie to cool, but watching people line up for seconds makes those thirty minutes feel like an investment rather than a delay.

Making It Ahead

You can prepare the dough up to two days in advance and keep it wrapped tightly in the refrigerator. The apple filling should be mixed no more than an hour before baking or the apples will start releasing too much liquid before they hit the oven.

Serving Suggestions

Warm slices with vanilla ice cream create that perfect temperature contrast everyone loves. A drizzle of caramel sauce takes it over the top, though honestly this pie needs no embellishment to shine.

Storage and Reheating

Leftovers keep well at room temperature for two days covered loosely with foil, or refrigerated for up to five days if you prefer cold pie. Reheat individual squares in a 350°F oven for about 10 minutes to bring back that fresh-baked texture.

• Freeze the whole baked pie wrapped tightly for up to three months
• Thaw frozen pie overnight in the refrigerator before reheating
• The crust actually freezes remarkably well if you need to make this ahead for holidays

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Theres something deeply satisfying about feeding a room full of people with one beautifully simple dessert that somehow manages to feel special every single time.

Recipe Questions & Answers

→ What makes slab pie different from regular pie?

Slab pie is baked in a rectangular rimmed baking sheet rather than a round pie pan. This shape yields more servings with neater, uniform square portions. The larger surface area creates more crispy top crust while the thinner layers ensure even baking throughout.

→ Can I prepare the dough ahead of time?

Yes, the dough can be made up to 2 days in advance and refrigerated wrapped tightly. You can also freeze the dough for up to 3 months. Thaw overnight in the refrigerator before rolling out for best results.

→ What apple varieties work best?

Granny Smith apples provide excellent structure and tartness, while Honeycrisp adds natural sweetness. A mix of both creates balanced flavor and texture. Other good options include Braeburn, Jonagold, or Pink Lady apples that hold their shape during baking.

→ How should I store leftovers?

Cover cooled slab pie tightly with foil or plastic wrap and store at room temperature for up to 2 days. For longer storage, refrigerate for up to 5 days. The crust may soften slightly when refrigerated but can be crisped in a 350°F oven for 10 minutes.

→ Can I freeze this apple slab pie?

Yes, you can freeze fully baked slab pie for up to 3 months. Cool completely, wrap tightly in plastic then foil, and freeze. Thaw overnight at room temperature before serving. Alternatively, freeze unbaked and add 10-15 minutes to baking time.

→ What can I serve with apple slab pie?

Warm slices pair beautifully with vanilla ice cream, whipped cream, or a drizzle of caramel sauce. For a cozy dessert, serve with a cup of coffee or spiced cider. The pie also works well for breakfast alongside yogurt or coffee.