Sweet Potato Pie: A Southern Custard Pie from Scratch

Sweet potato pie is a custard pie from the American South: mashed sweet potatoes beaten with butter, sugar, eggs, milk and warm spice, baked in a single crust. It is smoother and brighter than pumpkin pie, and a fixture of Black Thanksgiving tables. This recipe makes one 9-inch pie, about 4½ hours from raw potatoes to a cooled, set slice.

What sweet potato pie is

A New World root

The sweet potato is not a potato. It belongs to the morning glory family, and people first grew it in tropical America. The International Potato Center puts that “more than 5,000 years ago in Latin America”. Today it grows in more developing countries than any other root crop.

In the United States, it became a Southern staple. North Carolina grows more than half the national crop.

Why Americans call it a yam

Many Southern cooks say “yam”, and many recipes ask for garnet yams. Those are sweet potatoes with red skin and deep orange flesh. True yams are a different, starchy tuber from Africa and Asia.

The historian Jessica B. Harris traced the mix-up to slavery. Enslaved Africans took to sweet potatoes “because they recalled the true yam of Africa”, she wrote in a 2009 New York Times essay. The Library of Congress adds that US rules now require a “yam” label to say “sweet potato” too.

The oldest recipes

Mary Randolph’s The Virginia House-Wife had a “sweet potato pudding” baked in pastry by its 1830 edition, now on Project Gutenberg. It used brandy, nutmeg and lemon peel. “Irish potato pudding is made in the same manner, but is not so good,” she wrote.

The first recipe titled “Sweet Potato Pie” that we found came from Abby Fisher. She was an African American cook from Mobile, Alabama, who dictated What Mrs. Fisher Knows About Old Southern Cooking in San Francisco in 1881.

Her recipe No. 53 is on the Internet Archive. It has no spice at all, just orange juice and grated peel, and a warning: “Have only one crust and that at the bottom of the plate.”

George Washington Carver printed two pies in his Tuskegee bulletin on sweet potatoes, first published in 1922. His “Pie (Extra Fine)” calls for cinnamon, ginger and “one ground clove”. The text survives in a reprint at Texas A&M AgriLife.

Sweet potato or pumpkin

Each November, the two pies get compared. The Associated Press asked the food writer Adrian Miller last year, in a story reprinted by the Mississippi Free Press. His verdict: “If there were to be a Mount Rushmore of soul food desserts, sweet potato pie would definitely be there.”

The stereotype, as the AP put it, is pumpkin for white Northerners and sweet potato for Black Southerners. The culinary historian Michael W. Twitty asked readers not to treat it as a “hard, fast marker” of who anyone is.

Why sweet potato pie matters this autumn

Thanksgiving falls on November 26

Thanksgiving 2026 is Thursday, November 26. The pie on the American Farm Bureau’s standard Thanksgiving menu is pumpkin. Sweet potatoes come as a side: in its 2025 survey, 3 pounds cost $4.00, up 37%. The 2026 survey is not out yet.

A big crop, then a dry year

The 2025 harvest was large. US growers produced 32.5 million hundredweight of sweet potatoes, 31% more than in 2024, according to the USDA’s vegetables summary of February 2026. North Carolina grew about 58% of that, by our arithmetic.

This year started dry. Drought delayed planting in North Carolina, a grower told FreshPlaza in August: “We hardly had any rain.” In October, WUNC reported that a county farm agent expected lower yields for sweet potatoes, among other crops. No official estimate of the 2026 crop exists yet; the USDA publishes one early next year.

In stores, sweet potatoes cost a little more than last fall. The USDA’s weekly retail report of October 23, 2026 put the average advertised price at $1.21 a pound, against $1.10 a year earlier.

Eggs cost a third less

The custard costs less to make than last autumn. A dozen large eggs averaged $2.27 in US cities in September 2026, against $3.49 a year earlier, the Bureau of Labor Statistics reports. That is a fall of about 35%. Butter fell about 17% over the same year.

People are buying more sweet potatoes

US sweet potato sales reached $950 million in the 52 weeks to March 22, 2026, up 19.1%. The figure comes from the market researcher Circana, as reported by Produce Market Guide in May. It covers the vegetable, not the pie. Nobody we could find has counted sweet potato pies this year, in shops, menus or searches.

The pie still had its moment in the news. “Always sweet potato pie, and (according to many, many people) never pumpkin,” wrote Word In Black in September, of the Black Thanksgiving table.

What goes into sweet potato pie

We compared 27 modern sweet potato pie recipes and read 2 historic ones. They include Toni Tipton-Martin’s Jubilee on Epicurious, Patti LaBelle’s 1999 cookbook, Cook’s Country, NYT Cooking and Serious Eats. Southern home bakers are well represented: Grandbaby Cakes, Divas Can Cook, Butter Be Ready and Cooks with Soul. This recipe follows their medians.

The sweet potatoes

The median pie uses 2 cups of mashed sweet potato, from about 1½ lb (680 g) of whole ones. Eleven recipes bake the potatoes and 11 boil them. “I like to bake mine because boiling takes away some of the flavor,” writes Jocelyn Delk Adams of Grandbaby Cakes. Carver’s bulletin, quoting the USDA, agreed that baking preserves flavor better than steaming.

Boiling works too, and it is faster. Chef Matthew Raiford, cooking his grandmother’s recipe for NPR, boils them whole: “the small fibers in the sweet potato peel off with the skin.”

Choose orange-fleshed sweet potatoes, such as Beauregard, Covington or garnet. White and purple ones give a pale or gray pie.

Sugar

The median is 1 cup (200 g) per pie, and most recipes fall between ¾ cup and 1 cup. Thirteen use white sugar only, 6 brown only, and 7 both. This recipe uses mostly white with a little brown. Serious Eats’ Stella Parks points out that 19th-century recipes used plain sugar, “if they called for any at all”.

Evaporated milk, eggs and butter

Evaporated milk is the most common liquid, in 13 of 27 recipes, at a median of ½ cup. Others use cream, whole milk, half-and-half or sweetened condensed milk. “PET was Big Mama’s favorite evaporated milk!” Adams writes.

Fifteen recipes use 2 eggs, and 9 use 3. Most add butter, a median of 6 tablespoons; nine use a whole stick.

Nutmeg and cinnamon

Cinnamon appears in 24 recipes and nutmeg in 22. Fewer add ginger, cloves or allspice. Grandbaby Cakes uses nutmeg alone: “No cinnamon in this one, y’all!”

Too much spice hides the potato, Parks warns. With ginger, cloves and brown sugar, the pie “tastes like a knockoff version of pumpkin, equally heavy and dark”. Here, ¾ teaspoon of cinnamon and ½ teaspoon of nutmeg keep it bright.

The crust

Fisher’s rule still holds: one bottom crust. Ten recipes blind-bake it first and 16 do not. An unbaked crust on a hot baking sheet, as here, is the simpler route. A store-bought crust is fine; 15 recipes allow one.

How to make it silky, not stringy

Sweet potatoes have long fibers that catch in the filling. Seven recipes deal with them on purpose:

• Beat, then rinse the beaters. The strings wrap around them, as Grandbaby Cakes notes.
• Push the mash through a sieve or a ricer for the smoothest pie.
• Run a blender or immersion blender through the finished filling.

Bake it gently, too. Twenty-three recipes bake at 350°F (175°C), for a median of about 50 minutes. Take the pie out while the center still wobbles. King Arthur’s bakers say a custard pie’s center should read 160°F to 170°F, “the range where eggs coagulate”, in their guide to pumpkin pie. Above 175°F, the edges dry and the middle cracks. Cook’s Country takes its sweet potato pie out at 165°F.

Variations from Southern kitchens

• Orange: add the grated zest of 1 orange, as Abby Fisher and Toni Tipton-Martin do.
• Bourbon: stir in 1 to 2 tablespoons with the vanilla. Four of the recipes use it.
• Brown butter: cook the butter until nutty and golden before mashing, as Divas Can Cook does.
• More spice: add ¼ teaspoon of ground ginger and a pinch of cloves, closer to Carver’s pie.
• Meringue or pecans: a few cooks top the pie with meringue or a pecan praline. Both are add-ons, not the classic.

Serving and storing sweet potato pie

Serve it cool

Sweet potato pie needs about 2 hours on a rack to set. Serve it at room temperature or cold, plain or with whipped cream. “When you eat sweet potato pie, you’re supposed to have just enough,” Raiford’s grandmother told him.

After Thanksgiving dinner, it sits well next to banana pudding, another Southern classic. For a Sunday meal, follow classic pot roast with a slice. Other sweet roots make desserts too: try the Filipino ube halaya or the Indian carrot pudding gajar ka halwa.

Keep it in the fridge

This is an egg custard, so it cannot stay out overnight. Get it into the fridge within 2 hours of baking; on a day over 90°F (32°C), within 1 hour. That is the FDA’s rule for egg dishes. Pies with eggs and evaporated milk “need special care”, the University of Illinois Extension adds. Some store-bought pies sit on shelves, but factories make them differently.

Covered in the fridge, it keeps 3 to 4 days. For pumpkin-type pies, the government’s cold storage chart gives the same time.

Freezing

Wrap the cooled pie tightly and freeze it for up to 2 months. Thaw it overnight in the fridge. The filling may weep a little on the surface; blot it with a paper towel.

Raw filling and dough

Don’t lick the spoon once the eggs are in. Raw eggs and raw flour can both carry germs, the CDC warns. That is why this recipe has you taste the mash before adding them.

Nutrition and allergens

A slice, an eighth of the pie, has about 440 calories, 6 g of protein, 23 g of fat and 55 g of carbohydrate. We added up USDA FoodData Central values for baked sweet potato, sugar, evaporated milk, eggs and butter, with a butter crust. The sweet potato makes each slice rich in vitamin A.

The pie contains milk, eggs and wheat. A pecan topping adds tree nuts, and some store-bought crusts contain soy. Read the labels if you cook for anyone with allergies.

Fixes for a cracked, runny or stringy pie

• The center cracked: it baked too long or too hot. Take it out while the middle still wobbles.
• The center is runny after cooling: it came out too early. Check for 165°F (74°C) next time.
• Stringy filling: strain the mash or blend the filling before pouring.
• A soggy bottom: bake the pie on a preheated baking sheet, or blind-bake the crust for 15 minutes first.
• A pale, grayish filling: the sweet potatoes were white-fleshed. Use orange ones.
• The crust edge burned: shield it with foil after 30 minutes.
• Too sweet: next time, use ¾ cup (150 g) of sugar in all. Very ripe sweet potatoes need less.

Substitutes for missing ingredients

• Evaporated milk: the same amount of half-and-half, or whole milk with 2 tablespoons of heavy cream.
• Brown sugar: use all white sugar, 1 cup (200 g) in total.
• Fresh sweet potatoes: 2 cups of canned sweet potato purée, unsweetened. Skip the canned “yams” in syrup, which are already sweet.
• Freshly grated nutmeg: ¼ teaspoon of ground nutmeg; it is stronger.
• A 9-inch crust: a 9-inch deep-dish crust works; it will be less full.

Frequently asked questions

How is sweet potato pie different from pumpkin pie?

Both are custard pies. Sweet potato pie is usually sweeter, smoother and less spiced, with a brighter orange color. Pumpkin pie tends to be denser and darker with more spice.

Should I boil or bake the sweet potatoes?

Either works. In our sample of 27, the split is even: 11 bake and 11 boil. Baking gives a deeper, sweeter flavor; boiling is faster.

Are yams and sweet potatoes the same?

In US stores, “yams” are almost always orange sweet potatoes. True yams are a different, starchy tuber and won’t make this pie.

How do I know when sweet potato pie is done?

The edges look set and slightly puffed, and the center still wobbles a little. A thermometer in the center should read 165°F to 175°F (74°C to 79°C).

Does sweet potato pie need to be refrigerated?

Yes. It is an egg custard, so refrigerate it within 2 hours of baking. It keeps 3 to 4 days.

Can I make sweet potato pie ahead?

Yes. Bake it a day or two before and keep it in the fridge. You can also freeze it for up to 2 months.

Why did my sweet potato pie crack?

It was overbaked. Take it out sooner, while the center still jiggles.

Can I use canned sweet potatoes?

Yes, unsweetened purée works well. Canned yams in syrup make a much sweeter pie, so cut the sugar.