Recipe for Bakery-Style Apple Slab Pie with Flaky Crust

Apple slab pie has become the go-to dessert when you need to feed a crowd without spending hours in the kitchen.

Unlike traditional round pies, this generous sheet pan version offers more servings and easier slicing for gatherings, potlucks, or family dinners.

The thin, flaky layers and sweet apple filling create a perfect balance that feels both homey and special.

Making dessert for large groups often feels overwhelming, but this format simplifies everything while still delivering that classic comfort everyone craves.

It travels well, stores beautifully, and somehow tastes even better the next day.

Best of all, presentation becomes effortless since each square looks neat and appealing on the plate.

If you love the flavors of classic American baking but need a more practical approach, the full recipe below shows exactly how to make it happen.

Why Apple Slab Pie Works

• Crowd Pleaser: This slab pie feeds a whole group without fussy individual slices, making it perfect for gatherings where everyone wants a tasty dessert.
• Baker-Friendly Design: The rectangular shape lets you cut clean, even portions and makes the pastry easier to roll out compared to traditional round pies.
• Smart Seasonal Treat: Packed with warm spices and apples, this dessert captures autumn’s comfort while delivering a delightful balance of sweet and tangy flavors in every bite.
• Make-Ahead Magic: Your filling and dough can be prepped ahead of time, so when dessert time arrives, assembly becomes a breeze and reduces last-minute kitchen stress.

Apple Slab Pie Ingredient Overview

• All Purpose Flour (3½ cups): The foundation of your flaky, tender crust that will hold everything together.
• Sugar (3 tablespoons): Adds a touch of sweetness to balance the dough’s richness.
• Salt (½ teaspoon): Enhances the overall flavor of your pie crust.
• Unsalted Butter (2½ sticks): Creates those perfect, buttery layers that make the crust irresistible.
• Ice Water: Helps bind the dough and keeps everything cool and cohesive.

• Cortland Apples (3 large): The star of the show, providing a perfect balance of tartness and sweetness.
• Sugar (½ cup): Brings out the natural flavors of the apples and helps create a delicious syrup.
• Lemon Juice (1 tablespoon): Adds brightness and prevents the apples from browning.
• Cinnamon (½ teaspoon), Allspice (¼ teaspoon), Nutmeg (¼ teaspoon): Warm spices that make your kitchen smell amazing.
• Vanilla Extract (¼ teaspoon): Adds depth and complexity to the filling.
• Salt (¼ teaspoon): Balances and enhances the overall flavor.
• Cold Water (¼ cup), Cornstarch (1 tablespoon): Creates a smooth, thickened filling that won’t run.
• Raisins (¼ cup): Provides little bursts of sweetness throughout the pie.

• Egg Yolk (1 large), Water (1 teaspoon): Creates a beautiful golden-brown glaze on the crust.
• Confectioners’ Sugar (½ cup), Water or Milk (1 tablespoon): Makes a simple, sweet drizzle to top off the pie.

Handy Kitchen Tools for Apple Slab Pie

• Food Processor: Your go-to tool for mixing pastry dough quickly and evenly, with a large enough capacity to handle the pie crust ingredients.
• Large Heavy Saucepan (Medium): Perfect for cooking down your apple filling without scorching, giving you control over the simmering process.
• Small Bowl (2): One for mixing cornstarch slurry, another for creating egg wash – compact and essential for precise measuring.
• Rolling Pin: Your trusted companion for transforming chilled dough into a smooth, even rectangle that fits perfectly on the baking sheet.
• Rimmed Baking Sheet (18×13 inch): Provides sturdy support for your slab pie and catches any potential drips during baking.
• Parchment Paper: Ensures easy pie removal and prevents sticking, making cleanup a breeze.
• Serrated Knife: Slices through the flaky crust and apple filling cleanly without crushing the delicate layers.
• Fork: Helps crimp and seal the pie edges, creating a beautiful, traditional pastry seal.
• Whisk: Smooths out egg wash and cornstarch mixture, eliminating any pesky lumps.
• Cooling Rack: Allows air circulation around your pie, preventing a soggy bottom and helping it cool evenly.

Steps for Baking Apple Slab Pie

Refined Cooking Notes for Apple Slab Pie

• Pulse butter into flour mixture until it looks like coarse sand for the perfect flaky crust.
• Simmer apples gently to release natural juices without turning them mushy, creating a rich, concentrated flavor.
• Whisk cornstarch and water separately to prevent lumps when thickening your apple filling smoothly.
• Brush your dough edges and top with egg wash to get that gorgeous golden-brown, shiny finish that makes your slab pie look professional.
• Let your pie rest for an hour after baking to allow the filling to set and make slicing easier, creating clean, beautiful pieces.

Alternate Versions of Apple Slab Pie

• Gluten-Free Slab Pie: Replace regular flour with a gluten-free blend, ensuring your blend contains xanthan gum for better texture and binding.
• Vegan Apple Delight: Swap butter for cold coconut oil and use a flax egg instead of egg wash, keeping the same delicious apple filling and technique.
• Nutty Fruit Variation: Swap raisins for chopped pecans or almonds, adding a crunchy texture and subtle nutty flavor to your apple slab pie.
• Spice Blend Alternative: Replace traditional spices with pumpkin pie spice or cardamom for a different aromatic profile that complements the apples perfectly.

Best Ways To Enjoy Apple Slab Pie

• Serve Fresh and Warm: Cut this apple slab pie into generous squares while it’s still slightly warm, letting the sweet apple filling peek through the golden crust.
• Perfect Ice Cream Companion: Scoop vanilla bean or cinnamon ice cream alongside each slice to complement the warm spices in your pie.
• Smart Storage Strategy: Wrap any remaining pieces carefully in plastic wrap, storing them at room temperature for up to two days to maintain the crust’s delicate texture.
• Quick Breakfast Twist: Enjoy a slice with your morning coffee for a delightful breakfast treat that feels like a special weekend indulgence.

How Long Does Apple Slab Pie Keep

• Keep your apple slab pie covered tightly with plastic wrap at room temperature for the best texture during the first two days after baking.
• Store any remaining slices in an airtight container in the refrigerator, where they’ll stay fresh for 3-4 days.
• When freezing leftovers, wrap each slice individually in plastic wrap, then place in a freezer bag to preserve quality for up to 2 months.
• Let frozen pie slices thaw overnight in the refrigerator for the most even and delicious results when you’re ready to enjoy them again.

Apple Slab Pie Helpful FAQs

Apple Slab Pie Recipe

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• Total Time: 2 hours 30 minutes
• Yield: 8 1x

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Description

Whipping up this apple slab pie brings pure comfort straight from Grandma’s kitchen to your table. Buttery pastry packed with cinnamon-spiced apples becomes the ultimate crowd-pleasing dessert that disappears faster than you can slice it.

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Ingredients

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Dough Ingredients:

• 3½ cups all-purpose flour
• 2½ sticks unsalted butter
• 3 tablespoons sugar
• ½ teaspoon salt
• Unmeasured ice water

Filling Ingredients:

• 3 cups Cortland apples
• ½ cup sugar
• ¼ cup raisins
• 1 tablespoon lemon juice
• 1 tablespoon cornstarch

Supporting Ingredients:

• ½ teaspoon cinnamon
• ¼ teaspoon allspice
• ¼ teaspoon nutmeg
• ¼ teaspoon vanilla extract
• ¼ teaspoon salt
• ¼ cup cold water

Egg Wash:

• 1 large egg yolk
• 1 teaspoon water

Glaze:

• ½ cup confectioners’ sugar
• 1 tablespoon water or milk

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Instructions

1. Pulse flour, sugar, and salt in food processor. Add chilled butter and process until mixture looks like coarse crumbs, about 15 quick pulses.
2. Drizzle ⅓ cup ice cold water into processor and pulse 12 more times until dough barely comes together. Add extra water by teaspoon if needed to help dough bind.
3. Transfer dough to clean surface and shape into rectangular block. Wrap tightly in plastic and refrigerate for minimum 1 hour.
4. Combine 3 cups chopped apples, ½ cup sugar, lemon juice, spices, and salt in heavy saucepan. Cook over medium heat for 5 minutes, stirring occasionally until liquid starts simmering.
5. Whisk ¼ cup cold water with 1 tablespoon cornstarch in separate small bowl. Pour mixture into simmering apples and stir carefully to thicken without breaking fruit.
6. Remove apple mixture from heat and fold in ¼ cup raisins. Allow filling to cool completely to room temperature.
7. Preheat oven to 375°F with rack positioned in center position.
8. Whisk 1 egg yolk with 1 teaspoon water to create egg wash.
9. Roll chilled dough into 12×18 inch rectangle on floured surface. Trim edges to create 11×16 inch neat rectangle.
10. Transfer dough to parchment-lined baking sheet. Spread cooled apple filling over half the dough, leaving ½-inch border.
11. Brush dough borders with egg wash. Fold top half of dough over filling and seal edges with fork tines.
12. Brush entire surface with remaining egg wash. Cut 5 small steam vents across top.
13. Bake at 375°F for 40 minutes until golden brown. Transfer to cooling rack for 1 hour.
14. Mix ½ cup confectioners’ sugar with 1 tablespoon water. Drizzle glaze horizontally across pie and let set 30 minutes before serving.

Notes

• Chill the dough thoroughly to ensure a flaky, tender crust that holds its shape perfectly.
• Use a mix of tart and sweet apples like Granny Smith and Honeycrisp for balanced flavor and texture.
• Make the filling ahead of time to let the flavors meld and save time on baking day.
• Cut clean, precise edges when rolling out the dough to create a professional-looking slab pie that bakes evenly.

• Prep Time: 1 hour 20 minutes
• Cook Time: 40 minutes
• Category: Pies
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 8
• Calories: 338 kcal
• Sugar: 18 g
• Sodium: 120 mg
• Fat: 17 g
• Saturated Fat: 10 g
• Unsaturated Fat: 7 g
• Trans Fat: 0.3 g
• Carbohydrates: 43 g
• Fiber: 2 g
• Protein: 3 g
• Cholesterol: 55 mg