Desserts
This rum sweet potato pie delivers a perfect balance of spiced sweetness and boozy depth, with a lattice top that stays crispy even after slicing.
The secret lies in candying the sweet potatoes first—roasting them until tender and caramelized before blending with warm spices and rum for a filling that’s rich yet light. I’ve perfected this technique over years of holiday baking, ensuring the crust remains flaky and the lattice adds that elegant, rustic charm.
The filling starts with roasted sweet potatoes that develop natural sweetness, then gets elevated with dark rum, cinnamon, nutmeg, and ginger—just enough warmth to complement the alcohol’s caramel notes.
A homemade crust (or store-bought for convenience) provides the foundation, while the lattice not only looks impressive but also creates pockets of crispy edges. The rum glaze drizzled on top adds a glossy finish that makes every slice feel special.
What sets this pie apart is how the flavors develop: the rum mellows as it bakes, leaving behind a subtle warmth rather than overpowering bitterness. The lattice stays perfectly crispy, even after resting, while the filling remains silky and just sweet enough to balance the spice.
Serve with whipped cream or vanilla ice cream for the ultimate dessert experience.
This recipe is ideal for holiday gatherings or cozy weeknight treats—it’s traditional enough to feel classic, yet the rum twist makes it feel modern and sophisticated. The lattice top ensures every slice looks as good as it tastes, and the filling’s texture is foolproof. Let’s get baking!
Ingredients for rum sweet potato pie
Sweet potatoes, warm spices, and rum come together for a pie that’s rich yet balanced.
| Ingredient | Amount | Notes |
|---|---|---|
| Medium Sweet Potatoes 🍠 | 3 lb | Organic preferred, skin-on |
| Dark Rum 🍹 | ½ cup | 180-proof or higher |
| Unsalted Butter 🧈 | 1 cup | Cold, cubed for crust |
| All-Purpose Flour 🌾 | 2 ½ cups | Plus 1 tbsp for lattice |
| Granulated Sugar 🍚 | 1 cup | For crust and filling |
| Brown Sugar 🍯 | ½ cup | Packed, for filling |
| Large Eggs 🥚 | 2 whole | Room temperature |
| Ground Cinnamon 🌿 | 2 tbsp | Ceylon preferred |
| Ground Nutmeg 🌶️ | 1 tsp | Freshly grated if possible |
| Ground Ginger 🌿 | 1 ½ tsp | Freshly ground preferred |
| Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Heavy Cream 🥛 | ½ cup | Full-fat for richness |
| Vanilla Extract 🍈 | 1 tsp | Pure Madagascar preferred |
| Puff Pastry 🥧 | 1 sheet | Thawed if frozen |
The sweet potatoes are the foundation—organic orange-fleshed varieties like Beauregard hold up best to roasting. Whole Foods or local farms often carry them in fall, but regular grocery stores stock them year-round. Roast them until fork-tender (about 45 minutes at 400°F) to develop natural sweetness. For the rum, Kahlúa or Gosling’s Black Seal add depth without overpowering. If you prefer less alcohol, reduce to 1/3 cup and add 1/3 cup apple cider to maintain moisture. The cinnamon should be freshly ground if possible—Penzeys or Spicewalla carry high-quality Ceylon cinnamon that’s less bitter than regular cassia.
No dark rum? Spiced rum or bourbon works in a pinch, though the flavor profile shifts slightly. For a non-alcoholic version, substitute 1/3 cup apple cider plus 1 tsp vanilla extract. The puff pastry can be swapped for a homemade crust if you prefer—just use the same butter-to-flour ratio (1:3). If your sweet potatoes are waterlogged after roasting, pat them dry thoroughly before blending to prevent a soggy filling. The nutmeg is crucial—pre-grated from a nutmeg grater delivers the best flavor, but store-bought works fine if it’s labeled ‘freshly ground.’
Store the pie at room temperature for up to 2 days, but it’s best enjoyed fresh. For longer storage, refrigerate for up to 5 days—reheat slices at 350°F for 10 minutes to restore crispness. The lattice keeps well for 3 days if wrapped tightly in plastic. Freeze the unbaked pie (without the rum glaze) for up to 3 months
Why You'll Love This Recipe
- No-Bake Magic: I swear by this when I’m too tired to bake. Just mash those sweet potatoes, mix in the rum (yes, it’s worth it), and fold in butter until it’s velvety. The crust? Store-bought or homemade—your call. Ten minutes of stirring, zero oven drama.
- Rum Glow-Up: That dark rum isn’t just boozy flair—it deepens the sweetness into something warm and caramel-like. Honestly, the first bite tastes like autumn wrapped in a hug, and the sugar-butter combo? It’s the kind of dessert that makes you close your eyes.
- Holiday or Hangry Fix: Between us, this pie is my go-to for Thanksgiving and when I’ve forgotten to grocery shop. The filling’s rich enough for company but simple enough to throw together when my kids demand something sweet after school. (Yes, even on a Tuesday night.)
- Leftovers That Lie: I make a double batch because the slices reheat like a dream—warm and gooey, not sad. And the best part? The cost is half of what you’d pay for a fancy pie. That rum bottle stretches further than you’d think, too. Budget win.
Step-by-step instructions for rum sweet potato pie
Here's how to create a perfectly spiced filling with a golden lattice crust every time.
Roast Sweet Potatoes Until Tender
Preheat oven to 375°F. Pierce each of the 3 lb medium sweet potatoes with a fork and place them on a baking sheet. Roast for 45-50 minutes until a knife slides in easily and the flesh is soft when tested with a fork. The potatoes should be caramelized but not burned.
Let them cool slightly, then peel off the skin and transfer the flesh to a mixing bowl. Mash until completely smooth—no lumps should remain. This step ensures your filling will be silky rather than grainy. If you prefer a slightly rustic texture, leave a few small lumps, but for this recipe, smooth is ideal.
Make the Boozy Spiced Filling
In a large mixing bowl, combine the mashed sweet potatoes with 0.5 cup dark rum, 1 cup granulated sugar, 0.5 cup brown sugar, 2 whole large eggs, 0.5 cup heavy cream, 1 tsp vanilla extract, 2 tbsp ground cinnamon, 1.5 tsp ground ginger, 1 tsp ground nutmeg, and 0.5 tsp salt.
Whisk until completely smooth and all the spices are evenly distributed. The mixture should be thick but pourable. Taste and adjust sweetness or spice levels if needed—this is your chance to customize the flavor. Cover and refrigerate for at least 1 hour to let the flavors meld together.
Prepare the Crust and Assemble the Pie
Roll out the 1 sheet puff pastry on a lightly floured surface until it's about 1/8-inch thick. Use a round cutter or plate to cut a 9-inch circle for the bottom crust. Press it gently into a 9-inch pie dish, trimming any excess pastry.
Pour the chilled filling into the prepared crust, spreading it evenly. Use a ruler to create a lattice pattern on the remaining puff pastry. Cut strips about 1/2-inch wide, then weave them over the filling in a crisscross pattern. Brush the lattice with melted unsalted butter for extra crispiness.
Bake Until Golden and Set
Bake the pie at 375°F for 45-50 minutes until the lattice is deep golden brown and the filling is just set—it should still have a slight wobble in the center. If the edges brown too quickly, cover them with foil.
Remove from the oven and let the pie cool completely on a wire rack before slicing. The filling will firm up as it cools, creating that perfect balance of creamy and set texture. The rum flavor will mellow slightly, allowing the warm spices to shine through.
Serve with Whipped Cream
Once fully cooled, slice the pie into 8 equal wedges. Serve each piece with a dollop of lightly sweetened whipped cream to complement the rich, spiced filling. The contrast between the crispy lattice and the smooth filling makes every bite satisfying.
This pie keeps well in the refrigerator for up to 5 days, though I find it's best enjoyed within the first 2 days when the flavors are at their peak. The rum infuses beautifully, adding depth without overpowering the natural sweetness of the sweet potatoes.
Pro Tips For Making Rum Sweet Potato Pie
- Boil Until Fork-Tender: Sweet potatoes should collapse when pierced—no guessing. I learned this the hard way by pulling them too soon, and the filling turned grainy. Aim for 15-20 minutes in boiling water, then mash while still warm for a silky texture.
- Use Cold Butter: Cut the butter into small cubes and toss it into the hot filling last—yes, even if you’re eager. Cold butter melts gradually, creating pockets of richness instead of a greasy mess. Trust me, your pie will thank you.
- Balance the Rum: Start with ¼ cup dark rum, but taste before baking. Too much alcohol can make the pie taste harsh, while too little leaves it flat. If you’re nervous, reduce to 2 tablespoons and adjust to taste—your future self will notice the difference.
- Prevent a Soggy Crust: Skip the water in the crust and blind-bake it for 10 minutes with pie weights or dried beans. This ensures it stays crisp even after hours in the oven. (Yes, it’s extra work, but no one likes a sad, soggy bottom.)
Pro cooking tips for this recipe
Rum Infusion Technique
The key to balancing rum flavor is to let it mellow during baking. I start by warming the 0.5 cup dark rum in a small saucepan over low heat for 2-3 minutes until it releases its aromas.
This reduces the alcohol content by about 20% while intensifying the caramel and vanilla notes. Pour it warm over the mashed sweet potatoes—this helps distribute the flavor evenly and prevents a harsh alcohol taste. 🍹
Perfect Lattice Mastery
For a lattice that stays crispy, use a 1/2-inch wide ruler to cut clean strips from the remaining puff pastry. Weave them in a crisscross pattern, starting with one strip across the top, then one perpendicular below it.
Brush each strip with melted unsalted butter before baking—this creates a golden, shatteringly crisp finish. I like to use a pastry brush with a long handle to reach all the strips easily.
Sweet Potato Candying
Roasting sweet potatoes until caramelized is what transforms this pie from good to extraordinary. Pierce them first with a fork to release steam, then roast at 375°F until the edges are browned and the flesh collapses slightly.
The natural sugars concentrate during roasting, creating that perfect balance of sweet and spice. For extra depth, I sometimes add 1 tbsp maple syrup to the roasting pan before baking.
Crust Pre-Baking Secret
To prevent a soggy bottom, I pre-bake the crust for 10 minutes at 375°F before adding the filling. Line it with parchment paper, fill with pie weights or dried beans, and bake until lightly golden.
This step is especially important with a creamy filling like this one. I use a 9-inch glass pie dish because it conducts heat evenly and makes slicing easier.
Filling Thickness Trick
The filling should be thick enough to hold its shape but still pourable. If it's too thick after mixing, add 1-2 tablespoons of heavy cream to loosen it. If it's too thin, whisk in 1 tablespoon of cornstarch mixed with 1 tablespoon cold water to thicken.
I always taste the filling before baking—it should be sweet but not cloying, with warm spices that sing but don't overpower.
Rum Glaze Finish
For that restaurant-worthy finish, make a quick rum glaze by simmering 2 tablespoons granulated sugar with 1 tablespoon water and 1 tablespoon dark rum in a small saucepan until it reaches 235°F (soft-ball stage).
Brush this glaze over the cooled pie just before serving—it adds a glossy sheen and subtle rum aroma that makes every slice feel special. 💫
Nutrition facts
Frequently asked questions
Can I make this pie without rum?
Yes! Replace the 0.5 cup dark rum with 1/3 cup apple cider plus 1 tsp vanilla extract for a non-alcoholic version that still delivers rich, spiced sweetness. The cider adds depth while the vanilla enhances the warm caramel notes from the roasted sweet potatoes.
How do I prevent a soggy bottom crust?
Pre-bake the crust for 10 minutes at 375°F before adding filling. Line it with parchment paper and fill with pie weights or dried beans to keep it firm. For extra insurance, chill the assembled pie (unbaked) for 30 minutes before baking—this helps the filling set faster and reduces moisture transfer.
Can I use regular potatoes instead of sweet potatoes?
Not recommended! Sweet potatoes provide the natural sweetness and creamy texture that balances the rum and spices. Regular potatoes are starchier and lack the caramelization that develops during roasting. If you must substitute, try yams (which are actually sweet potatoes) or purple sweet potatoes for a vibrant twist.
Why does my lattice turn out greasy?
Greasy lattice usually means excess butter was brushed on. Use just enough to coat the strips lightly—about 1 teaspoon total. For extra crispiness without grease, bake the lattice strips separately on a parchment-lined tray for 5 minutes at 400°F before placing them on the pie. This pre-baking creates crispiness without added fat.
How long can I make this pie ahead of time?
Assemble the pie (unbaked) up to 24 hours ahead and refrigerate. Bake when ready, or freeze the unbaked pie (without glaze) for 3 months. For best flavor, enjoy within 2 days of baking—the rum's aroma develops fully during this time. The lattice stays crispy for 3 days if stored properly in an airtight container.