Pumpkin Slab Pie Recipe for a Crowd

Pumpkin Slab Pie Recipe: A Fall Dessert That Feeds a Crowd

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When autumn arrives and holiday gatherings begin, nothing says comfort like a classic pumpkin pie. But for those feeding a crowd—whether for Thanksgiving, Friendsgiving, or just a cozy fall get-together—a traditional round pie doesn’t always cut it. Enter: the Pumpkin Slab Pie, a large-format version of the beloved dessert, designed to serve a roomful of guests with ease. This recipe simplifies the process, delivering the same creamy, spiced pumpkin filling you love—but atop a rectangular sheet of flaky, buttery pastry crust. It’s an unexpected twist on tradition that guarantees smiles and satisfied bellies.

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Why Make a Slab Pie?

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A slab pie is essentially a sheet pan pie, featuring the same flavors and textures as its round counterpart, but scaled up for easier portioning and serving. Instead of a 9-inch pie, you’ll bake this pie in a 10×15-inch jelly roll pan, allowing it to be cut into squares for individual servings—no messy slicing required. Slab pies are practical for gatherings, easier to transport (great for potlucks), and visually impressive. Plus, they can easily be prepared ahead of time, making them a stress-free option for busy hosts.

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The Perfect Pie Crust

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The foundation of any great slab pie is a tender, flaky, and buttery crust that holds up under the weight of a creamy filling. This recipe uses a classic homemade pastry dough, but don’t let that scare you off—it’s straightforward, forgiving, and worth the effort. The dough is made with just a handful of pantry staples: all-purpose flour, a touch of sugar for subtle sweetness, salt to enhance flavor, cold butter (the colder, the flakier), and just enough ice water to bring it all together.

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Step-by-Step Crust Instructions

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• Combine all-purpose flour, sugar, and salt in a food processor.

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• Pulse in cold, cubed butter until the mixture resembles coarse sand.

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• With the machine running, gradually add ice water just until the dough holds together when pinched.

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• Form the dough into a flat rectangle, wrap in plastic, and chill for at least an hour to relax the gluten.

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• On a floured surface, roll the dough into a 13×18-inch rectangle, then ease it into a 10×15-inch jelly roll pan, letting excess dough hang over the edges.

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• Trim and fold the overhang, crimping the edges for a rustic look and a sturdy crust border.

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• Chill the crust until firm, then blind-bake (line with parchment, fill with weights or beans) at 375˚F until set and golden, about 30 minutes. Remove weights and continue baking until the bottom is golden, about 20 more minutes.

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• Let the crust cool completely before adding the filling.

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Spiced Pumpkin Filling

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The pumpkin pie filling for a slab pie is lusciously creamy, gently spiced, and just sweet enough. This version uses real pumpkin puree (canned for convenience and consistency), evaporated milk for richness, brown sugar for a caramelized depth, and a quartet of aromatic warm spices—cinnamon, ginger, nutmeg, and salt. Vanilla extract rounds out the flavors, while eggs help the filling set as it bakes.

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Filling Ingredients Table

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Simply whisk together all the filling ingredients in a large bowl until smooth and well combined. The mixture should be homogenous and free of lumps for the best texture. Pour the filling into the baked, cooled crust, and gently place the pan back in the oven.

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Baking and Serving

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Bake the slab pie at 325˚F until the center is set but still slightly wobbly—typically 50 to 55 minutes. The lower temperature helps prevent cracking and ensures even baking. Let the pie cool completely on a rack before slicing—patience pays off with clean, even slices. For serving, cut the slab pie into generous squares and top each with a dollop of freshly whipped cream for a classic finishing touch.

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Tips and Variations

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• Make Ahead: Both the crust and filling can be prepared the day before. Store the pre-baked crust covered at room temperature and the filling in the fridge. Assemble and bake on the day of serving for freshness.

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• Spice Swap: If you don’t have nutmeg or ginger, substitute with homemade pumpkin pie spice blend, or use extra cinnamon.

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• Gluten-Free Option: Substitute a gluten-free flour blend for the all-purpose flour in the crust. Be sure to use a gluten-free thickener if a recipe suggests it.

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• Cream Alternatives: For a lighter pie, swap evaporated milk for regular whole milk, or for extra richness, use heavy cream.

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• Add Extras: Stir in a handful of toasted pecans or walnuts for added crunch, or drizzle with caramel sauce for a decadent twist.

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Frequently Asked Questions (FAQs)

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Q: Can I use fresh pumpkin instead of canned?

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A: Yes, you can use homemade pumpkin puree, but canned pumpkin puree is preferred for its consistency and ease. If using fresh pumpkin, roast and puree it until smooth, and drain any excess liquid for best results.

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Q: How long does pumpkin slab pie keep?

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A: Wrapped tightly or stored in an airtight container, pumpkin slab pie will stay fresh in the refrigerator for up to 3 days. Let it come to room temperature before serving, or gently rewarm in a low oven.

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Q: Can I freeze pumpkin slab pie?

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A: Yes! Allow the pie to cool completely, wrap tightly in plastic and foil, and freeze for up to 2 months. Thaw overnight in the refrigerator and bring to room temperature before serving.

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Q: What size pan should I use?

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A: A 10×15-inch jelly roll pan is ideal for this recipe. If you use a different size, adjust recipe quantities accordingly, as baking time may vary.

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Q: Can I make mini pumpkin slab pies?

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A: Absolutely! Use the same filling and crust recipes, but divide them among lined muffin tins for adorable single-serving pies.

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Final Thoughts

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Pumpkin slab pie is the answer to your holiday dessert dilemma: easy to make, easy to serve, and impossible to stop eating. The buttery crust and spiced pumpkin filling are classic comforts scaled up for modern gatherings. Whether you’re hosting Thanksgiving, a casual fall potluck, or simply want a show-stopping dessert, this pie is sure to become a tradition. With a little advance prep, you can enjoy a stress-free holiday with dessert that’s as generous and inviting as your hospitality.