Delicious Apple Slab Pie

My aunt discovered slab pies during a chaotic Thanksgiving when we had twice as many guests as expected. She grabbed a rectangular baking sheet instead of a pie dish and declared this brilliant solution would save us all. That golden, buttery rectangle emerged from the oven and I've never looked at circular pies quite the same way since. Something about that rustic slab shape makes everyone reach for seconds without thinking twice.

Last summer I made three of these for a neighborhood block party and watched them disappear in twenty minutes flat. People kept asking what made it so special compared to regular pie and honestly I think its that perfect ratio of filling to crust in every single square. My neighbor's daughter still requests it for her birthday instead of cake now.

Ingredients

• All-purpose flour: The backbone of your crust, providing structure while keeping it tender
• Ice cold butter: Essential for those flaky layers we all chase after, keep it straight from the fridge
• Granny Smith and Honeycrisp apples: This combination gives you the perfect balance of tart and sweet with texture that holds up beautifully
• Light brown sugar: Adds a subtle caramel depth that granulated sugar alone cannot achieve
• Fresh lemon juice: Prevents apples from browning and brightens the overall flavor profile
• Egg wash: Creates that gorgeous golden bakery style finish that makes everyone think you bought it

Instructions

Make the Crust:

Whisk together your flour, sugar, and salt in a large bowl until well combined. Work in that cold butter quickly with your fingers or a pastry cutter until you see coarse crumbs the size of small peas. Drizzle in ice water just until the dough holds together when squeezed, then divide into two unequal pieces and chill briefly.

Prepare the Apple Filling:

Toss your sliced apples with both sugars, cinnamon, nutmeg, salt, cornstarch, and lemon juice until every piece is coated. Let this sit for about five minutes while you roll out your bottom crust. This helps the cornstarch start working and the apples release a bit of their juices.

Assemble the Pie:

Roll the larger dough portion on a floured surface until it's big enough to line your baking sheet including up the sides. Carefully transfer it to your prepared pan and press gently into the corners. Pour your apple mixture evenly over the bottom crust.

Top and Seal:

Roll out the remaining dough and drape it over those spiced apples. Trim the overhang, then pinch and fold the edges to seal everything together. Cut several small slits in the top crust to let steam escape during baking.

Finish and Bake:

Brush the entire top with your egg wash and sprinkle generously with coarse sugar for that extra crunch and sparkle. Bake at 400°F for about forty minutes until deeply golden and bubbling through those vents. Let it cool for at least thirty minutes before slicing into squares.

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My sister served this slightly warm with vanilla ice cream at her wedding reception and people still talk about it three years later. There's something about slab pie that feels more approachable and generous than traditional pies. It says welcome to my table without trying too hard to impress.

Choosing Your Apples

I've learned through many failed experiments that apple selection matters enormously here. All Gala apples will turn to mush while all Granny Smiths stay too firm and tart. That Honeycrisp and Granny Smith combo gives you soft apples that still hold their shape perfectly after baking.

Making It Ahead

You can absolutely assemble this entire pie the night before and refrigerate it unbaked. Just add about ten minutes to your baking time and watch it closely toward the end. The crust actually benefits from that extra chilling time in the fridge.

Serving Suggestions

This slab pie travels beautifully and tastes even better on the second day if stored properly. Warm individual squares in the microwave for about twenty seconds before serving with a scoop of vanilla bean ice cream.

• A drizzle of salted caramel sauce takes this over the top
• Serve alongside sharp cheddar cheese for a sweet and salty contrast
• Sprinkle with flaky sea salt right after baking for a sophisticated touch

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Whatever you do, do not skip the coarse sugar on top because that extra crunch is what makes this truly special.

Common Questions

→ What makes slab pie different from regular pie?

Slab pie is baked in a rectangular baking sheet rather than a round pie pan. This shape produces more servings with a higher crust-to-filling ratio, making it perfect for feeding crowds and easier to portion into squares.

→ Which apples work best for this?

Granny Smith and Honeycrisp apples are excellent choices. Granny Smith provides tartness and holds its shape well during baking, while Honeycrisp adds natural sweetness. A mix of both varieties creates the perfect balance of flavor and texture.

→ Can I make the dough ahead of time?

Absolutely. The dough can be prepared up to 2 days in advance and wrapped tightly in the refrigerator. You can also freeze the dough for up to 3 months. Thaw overnight in the refrigerator before rolling out.

→ How should I store leftovers?

Cover the cooled pie loosely 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 pie can also be frozen, wrapped well, for up to 3 months.

→ Why does my crust shrink during baking?

Crust shrinkage often happens when the dough isn't rested properly or is stretched when fitting it into the pan. To prevent this, let the dough relax in the refrigerator for 15-30 minutes after rolling, and gently press it into place without stretching.

→ Can I make this vegan?

Yes. Substitute cold plant-based butter or coconut oil for the unsalted butter, use almond or soy milk mixed with maple syrup instead of the egg wash, and skip the coarse sugar sprinkling or use vegan alternatives.