Southern Sweet Potato Pie

Roasted sweet potatoes, nutty brown butter, and creamy condensed milk custard.

southern sweet potato pie with swiss meringue topping

Sometimes the classics don't need much improvement. This Southern Sweet Potato Pie starts with roasted sweet potatoes, a full can of sweetened condensed milk, brown butter, and a generous blend of warm spices. Roasting the sweet potatoes concentrates their natural sweetness, while brown butter adds a subtle toasted, nutty flavor that complements the filling.

Unlike my Bourbon Brown-Butter Sweet Potato Pie, this version takes a more traditional approach. Sweetened condensed milk provides both the sweetness and creaminess, eliminating the need for additional sugar. Cinnamon, ginger, nutmeg, allspice, and a hint of cardamom round out the flavor without overpowering the sweet potatoes. Everything comes together in a flaky homemade crust for a rich, smooth custard that stands on its own. No elaborate toppings required.

Yield: 1 (9-inch) pie, approximately 8 servings
Prep Time: 25 minutes, plus roasting and crust preparation
Roasting Time: Approximately 60–90 minutes
Bake Time: Approximately 50–70 minutes, depending on the depth of the pie plate.
Cooling Time: 2–3 hours, plus refrigeration

Ingredients

Pie Crust

1 unbaked 9-inch pie crust (use my Signature 3:2:1 Butter-Lard Pie Crust or All-Butter Pie Crust)

Sweet Potato Filling

500g roasted sweet potato flesh, cooled and mashed
75g unsalted butter, for browning
1 can (14 oz / 397g) sweetened condensed milk
1½ teaspoons ground cinnamon
¾ teaspoon ground nutmeg
½ teaspoon ground ginger
¼ teaspoon ground allspice
½ teaspoon salt
1 teaspoon vanilla extract
2 large eggs, at room temperature

Instructions

1. Roast the Sweet Potatoes

Preheat the oven to 400°F (205°C).
Scrub the sweet potatoes and pierce them several times with a fork.
Place on a parchment-lined baking sheet and roast for approximately 60–90 minutes, depending on their size, until completely tender.
Allow the sweet potatoes to cool enough to handle, then remove the skins.
Measure 500g of roasted sweet potato flesh and mash until smooth.

Man-Made Tip: Roasting sweet potatoes instead of boiling them concentrates their natural sweetness and flavor without introducing excess moisture. Make sure they're completely tender before mashing. Any firm pieces can leave lumps in the finished custard.

2. Prepare the Crust

Prepare one single-crust 9-inch pie crust. I recommend my Signature 3:2:1 Butter-Lard Pie Crust, although my All-Butter Pie Crust works just as well.
Roll out the dough and fit it into a 9-inch pie plate. Trim the overhang, tuck the edges underneath, and crimp.
Refrigerate the prepared crust while making the filling. For this recipe, I recommend a standard-depth metal pie plate placed on a preheated baking sheet to encourage better bottom-crust browning. There's no need to blind-bake the crust.

3. Brown the Butter

Place the butter in a light-colored saucepan over medium heat.
Cook, stirring or swirling frequently, as the butter melts, foams, and begins to brown.
When the milk solids turn golden brown and the butter develops a nutty aroma, remove it immediately from the heat.
Transfer to a heatproof bowl, scraping in the browned milk solids, and allow it to cool until warm but no longer hot.

Man-Made Tip: Brown butter can go from golden to burnt quickly. Watch for amber-colored milk solids and a toasted, nutty aroma. Don't discard those browned bits at the bottom of the pan. That's where much of the flavor lives.

4. Prepare the Sweet Potato Filling

Place the mashed sweet potato in a large mixing bowl.
Add the warm brown butter and mix until evenly incorporated.
Gradually add the sweetened condensed milk, stirring until smooth.
Add the cinnamon, ginger, nutmeg, allspice, salt, and vanilla extract. Mix until evenly combined.
In a separate bowl, lightly beat the two eggs.
Gently whisk the eggs into the sweet potato mixture until smooth. Avoid incorporating too much air.

Man-Made Tip: For an especially smooth filling, use an immersion blender to purée the roasted sweet potatoes before adding the eggs. Once the eggs are incorporated, mix gently to avoid introducing excess air, which can cause the custard to puff or crack during baking.

5. Fill the Pie

Preheat the oven to 400°F (205°C) with a rimmed baking sheet on the center rack.
Remove the chilled pie crust from the refrigerator.
Pour the sweet potato filling into the prepared shell, spreading it evenly with a spatula.
If the filling exceeds the capacity of your pie plate, bake the extra separately in a small ramekin rather than overfilling the crust.

Man-Made Tip: Pie plates vary considerably in depth and capacity, even when they're labeled 9 inches. This recipe produces a generous amount of filling, so avoid filling the crust all the way to the rim. Bake any extra filling separately in a small ramekin. A deeper pie may also require additional baking time.

6. Bake

Carefully place the pie onto the preheated baking sheet.
Bake at 400°F (205°C) for 15 minutes.
Reduce the oven temperature to 350°F (175°C) and continue baking for approximately 35–55 minutes, beginning to check after 30 minutes.
The pie is done when:
- The outer edges of the filling are set.
- The center has a slight, gentle wobble when the pie plate is nudged.
- The filling moves together rather than sloshing like liquid.
If the crimped crust begins browning too quickly, cover the edges with a pie shield or strips of aluminum foil.

Man-Made Tip: Sweet potato pie is a custard, so don't wait for the center to become completely firm. Remove it when the edges are set and the center still has a gentle wobble. The filling will continue to set as the pie cools.

7. Cool and Chill

Transfer the pie to a wire rack and allow it to cool for approximately 1–2 hours. Refrigerate promptly, within two hours of removing it from the oven, until the custard is thoroughly chilled and set, preferably at least 4 hours or overnight.
Serve chilled or allow the pie to sit briefly at room temperature before slicing.

Notes

Use roasted sweet potatoes rather than boiled. Roasting concentrates their natural flavor and helps prevent excess moisture in the filling.
Measure 500g of prepared sweet potato flesh after roasting and peeling.
Brown butter adds a warm, toasted flavor that complements the sweet potatoes and spices.
This recipe uses a full 14-ounce can of sweetened condensed milk. No additional sugar is needed.
Make sure you're using sweetened condensed milk, not evaporated milk. The two are not interchangeable in this recipe.
Two whole eggs provide structure and richness.
Avoid overmixing after adding the eggs.
Refrigerate the pie after cooling. The custard will slice more cleanly once thoroughly chilled.

Frequently Asked Questions

Why roast the sweet potatoes instead of boiling them?

Roasting concentrates the sweet potatoes' natural sweetness and flavor without adding extra moisture. It also produces a richer filling that works especially well with brown butter and warm spices.

Why use sweetened condensed milk?

Sweetened condensed milk provides both the dairy and sweetness in this recipe. Its thick, concentrated consistency creates a rich, creamy custard without requiring additional granulated or brown sugar.

Can I substitute evaporated milk for sweetened condensed milk?

No, not without changing the recipe. Sweetened condensed milk contains a substantial amount of sugar, while evaporated milk is unsweetened. Substituting one for the other would significantly change the sweetness and consistency of the filling.

Why brown the butter?

Browning the butter develops toasted, nutty flavors that complement the sweet potatoes and spices. It's a simple step that adds depth to the finished pie.

Do I need to blind-bake the crust?

No. This recipe uses a chilled, unbaked crust. Starting at 400°F on a preheated baking sheet helps the bottom crust bake. I recommend a standard-depth metal pie plate for better heat transfer and browning.

How do I know when the pie is done?

Look for a filling that's set around the edges but still has a slight wobble in the center. The custard will continue firming as it cools, so avoid baking until the center is completely rigid.

Can I make this pie ahead of time?

Absolutely. Sweet potato pie is a great make-ahead dessert. Bake it the day before serving, allow it to cool completely, and refrigerate until ready to serve.

Southern Sweet Potato Pie

Roasted sweet potatoes, nutty brown butter, and creamy condensed milk custard.