Grandma’s Classic Apple Slab Pie: The Ultimate Crowd-Pleaser Recipe

Growing up, my grandma was renowned for her incredible cooking, more so than her baking prowess. Her kitchen was a constant hub of activity, filled with the comforting aromas of savory dinners rather than sweet desserts. While she certainly had a few cherished sweet treats up her sleeve – like her famous icebox cake, a refreshing ambrosia, and her delightful biscotti – these were always served as a complement to the main event: a hearty, satisfying meal designed to feed an army.

However, there was one exception to her cooking-over-baking rule: apple pie. And it was never just any apple pie. My grandma never used a traditional round pie plate. Instead, her signature apple pie always emerged from a large sheet pan or a 9×13-inch baking dish. I never quite understood why until I started baking myself, but knowing her, the reason was simple: a standard 9-inch pie would never be enough for her typical Sunday gathering. “Just enough” was an alien concept to Grandma; she always insisted on making sure there was an abundant supply, ensuring everyone could easily indulge in seconds, or even thirds, without a moment’s hesitation.

This philosophy of generosity and abundance is precisely why I adore the concept of an apple slab pie. It’s a testament to feeding a crowd with ease and ensuring nobody leaves the table wanting more. This grand-scale version of the classic dessert brings together everything we love about apple pie – a rich, spiced apple filling enveloped in a perfectly flaky, buttery crust – but in a format that’s ideal for sharing.

Why Apple Slab Pie is the Best Pie for Feeding a Crowd

For those who, like me, appreciate a generous crust-to-filling ratio, the slab pie is an absolute dream come true. Its rectangular shape allows for more surface area, meaning every slice boasts ample amounts of that golden, flaky pastry. This isn’t just about satisfying a craving; it’s about practical entertaining. Imagine slicing a traditional round pie into 12 or more servings – the slices become impossibly thin and often fall apart. A slab pie, however, offers substantial, easy-to-manage portions, making it perfect for potlucks, holiday feasts, or any gathering where you need to serve many happy faces.

The beauty of a homemade apple slab pie lies in its rustic charm and incredible flavor. Each bite delivers a harmonious blend of tender, juicy apples seasoned with warm spices, all encased within a rich, buttery crust. The aroma alone is enough to transport you back to simpler times, evoking memories of home and comfort.

Crafting the Perfect Apple Pie Filling: No More Runny Slices!

One of my biggest pet peeves when enjoying a slice of pie is when the filling stubbornly refuses to stay put. You take a bite, and half the apples slide off the plate, leaving you to eat the crust and filling separately. This Apple Slab Pie recipe addresses that common issue head-on. The filling is designed to set beautifully, holding its structure even when sliced into large pieces. This means a neat, satisfying experience with every forkful, keeping all those delicious spiced apples perfectly packaged within their pastry shell.

The secret to this wonderfully sturdy filling lies in the careful balance of apples and thickener. We use crisp Granny Smith apples, known for holding their shape during baking and providing a delightful tartness that contrasts perfectly with the sweetness of the sugar and warming spices. Combined with the right amount of cornstarch, the apples cook down to a tender consistency without becoming mushy, and the juices thicken into a luscious, cohesive sauce that clings to every apple chunk. The result is a filling that’s not only incredibly flavorful but also visually appealing – a true thing of beauty!

Tips for an Unforgettable Flaky Pie Crust

A great apple slab pie starts with an exceptional crust. Achieving that golden, flaky perfection is simpler than you might think, but it does require attention to a few key details:

1. Keep Everything Cold: This is paramount. Ensure your butter is ice-cold, ideally cut into small cubes and even frozen for a few minutes before mixing. Your water should also be ice water. Cold ingredients prevent the butter from melting into the flour too quickly, creating those pockets of steam that result in a flaky texture.
2. Don’t Overwork the Dough: Mix the dough just until it comes together. Overworking develops gluten, leading to a tough crust. A few visible chunks of butter are desirable – these will melt during baking, forming steam and creating flakiness.
3. Proper Chilling: Chilling the dough is essential. It allows the gluten to relax, making the dough easier to roll out, and keeps the butter cold and firm, contributing to flakiness. An hour is the minimum, but overnight is even better.
4. Use a Pastry Blender or Your Fingertips: For incorporating the butter, a pastry blender is ideal. If you don’t have one, use two forks or your fingertips, working quickly to avoid warming the butter with your hands.

Once you’ve mastered the crust, the rest of the apple slab pie assembly is straightforward, resembling a traditional pie but on a larger scale. The rectangular shape of the pan makes rolling out the dough less intimidating than trying to fit a round crust perfectly into a deep-dish pie plate.

If you love pie in any of its many forms – be it classic apple, cherry, or pumpkin – you truly owe it to yourself to try making a slab pie. It’s often less fussy than wrestling with a traditional round pie and guarantees that every guest can easily go back for seconds (or thirds!) without depleting your dessert reserves. It’s the only way my grandma believed in feeding people when a crowd was gathered, and I couldn’t be happier to follow in her generous, delicious footsteps!

More Apple Pie Recipes For You to Enjoy:

• Apple Hand Pies
• Salted Caramel Apple Pie
• Dutch Apple Pie
• Classic Apple Pie
• Maple-Apple Pie with Walnut Crumble Topping
• Salted Caramel Apple Cheesecake Pie

Looking back:
One year ago: Slow Cooker Apple Butter
Two years ago: Maple Pumpkin Cheesecake Bars
Three years ago: Skillet Apple Crisp

Apple Slab Pie

Yield: 12 to 18 servings

Prep Time: 20 mins

Cook Time: 45 mins

Resting Time: 2 hrs 5 mins

Total Time: 3 hrs 10 mins

A traditional apple pie baked in a jelly roll pan – the perfect dessert for large gatherings and crowds!

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Ingredients

For the Crust:

• 3¾ cups (470 g) all-purpose flour
• 1½ tablespoons (1.5 tablespoons) granulated sugar
• 1½ teaspoons (1.5 teaspoons) salt
• 1½ cups (340 g) unsalted butter, very cold and cut into ½-inch cubes
• ¾ cup (187.5 ml) ice water

For the Filling:

• 3½ to 4 pounds (1.6 to 1.8 kg) Granny Smith apples, about 8 medium apples, peeled, cored, and chopped into ½-inch chunks
• 2 tablespoons lemon juice
• ¾ cup (150 g) granulated sugar
• 3 tablespoons cornstarch
• 1 teaspoon ground cinnamon
• ¼ teaspoon (0.25 teaspoon) ground nutmeg
• ¼ teaspoon (0.25 teaspoon) ground allspice
• ⅛ teaspoon (0.13 teaspoon) salt

For the Egg Wash:

• 1 egg
• 1 tablespoon water
• Pinch of salt

Instructions

1. Make the Crust: In a large bowl, whisk together the flour, sugar, and salt. Using a pastry blender, two forks, or your fingertips, cut the very cold butter into the flour mixture until the largest pieces of butter are about the size of tiny peas. Gently stir in the ice water with a rubber spatula, mixing until a shaggy, craggy mass forms. Use your hands to lightly knead the dough two or three times to bring it together into a cohesive ball. Divide the dough roughly in half (it’s okay if one piece is slightly larger than the other). Wrap each half tightly in plastic wrap and flatten into a disc. Chill in the refrigerator for at least one hour, or up to two days.
2. Prepare for Baking: Preheat your oven to 375 degrees F (190 degrees C). Line the bottom of a 10x15x1-inch baking sheet or jelly roll pan with parchment paper, leaving a slight overhang on the longer sides for easy removal later.
3. Prepare the Filling: In a separate large bowl, toss the chopped Granny Smith apples with the lemon juice until they are evenly coated. This prevents the apples from browning. Add the granulated sugar, cornstarch, ground cinnamon, ground nutmeg, ground allspice, and salt to the apples. Stir thoroughly to ensure all the apples are evenly coated with the spice and sugar mixture.
4. Assemble the Pie (Bottom Crust): On a lightly floured surface, take one of your chilled dough halves (preferably the slightly larger one, if they were different sizes). Roll it out into an 18×13-inch rectangle. Carefully transfer this rolled-out dough to your prepared baking sheet. Gently press and work the dough into the corners and along the edges of the pan, making sure it forms a neat base. Trim any excess dough from the sides, leaving a ¾-inch overhang around the perimeter of the pan.
5. Add the Filling: Turn the entire apple mixture onto the dough-lined baking sheet. Spread the apples into an even layer, ensuring they are distributed uniformly across the crust.
6. Assemble the Pie (Top Crust): Roll out the second piece of chilled dough (the slightly smaller one, if applicable) into a 16×11-inch rectangle. Carefully drape this top crust over the apple filling. Take the ¾-inch overhang from the bottom crust and fold it over the edges of the top crust, effectively sealing the two pieces of dough together. If desired, you can crimp the edges with a fork or your fingers to create a decorative seal. Using a small paring knife, cut nine small slits (or more, if preferred) evenly over the surface of the top crust to allow steam to escape during baking.
7. Apply Egg Wash: In a small bowl, whisk together the egg, water, and pinch of salt until well combined. Brush a thin, even coating of this egg wash over all the exposed crust of the pie. This will give it a beautiful golden-brown finish and a slight sheen.
8. Bake the Pie: Place the slab pie in the preheated oven and bake for 40 to 45 minutes, or until the crust is golden brown and you can see the apple filling bubbling through the slits in the top crust. This bubbling indicates that the filling has thickened properly. Once baked, carefully transfer the hot pan to a wire rack and allow the pie to cool to room temperature before slicing and serving. This cooling process takes about 45 minutes and is crucial for the filling to set completely.
9. Storage: Leftover Apple Slab Pie will keep well at room temperature, thoroughly covered with plastic wrap or foil, for up to three days. For longer storage, refrigerate for up to one week.

Notes

Nutritional values provided are based on one serving.

Nutrition Facts

Calories: 482kcal, Carbohydrates: 64g, Protein: 5g, Fat: 23g, Saturated Fat: 14g, Cholesterol: 74mg, Sodium: 329mg, Potassium: 195mg, Fiber: 4g, Sugar: 27g, Vitamin A: 800IU, Vitamin C: 7mg, Calcium: 24mg, Iron: 2mg

Did you make this recipe?

We’d love to hear from you! Leave a review below to share your thoughts. Don’t forget to snap a picture and tag @thebrowneyedbaker on Instagram so I can see your delicious creation!

Author: Michelle Lettrich

Course: Dessert

Cuisine: American