Sweet Potato Soufflé

Sweet potato soufflé in a shallow white dish

The Spruce / Laurel Randolph

Prep: 15 mins
Cook: 90 mins
Total: 105 mins
Servings: 8 to 10 servings
Yield: 1 casserole
Nutrition Facts (per serving)
408 Calories
16g Fat
62g Carbs
5g Protein
Show Full Nutrition Label Hide Full Nutrition Label
Nutrition Facts
Servings: 8 to 10
Amount per serving
Calories 408
% Daily Value*
Total Fat 16g 21%
Saturated Fat 10g 49%
Cholesterol 78mg 26%
Sodium 184mg 8%
Total Carbohydrate 62g 22%
Dietary Fiber 5g 17%
Total Sugars 37g
Protein 5g
Vitamin C 27mg 134%
Calcium 93mg 7%
Iron 2mg 9%
Potassium 714mg 15%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

Thanksgiving certainly brings its share of sweet potato recipes, but it simply isn't complete without a sweet potato casserole. This Southern take on the holiday classic is extra creamy and fluffy with a sweet, crunchy topping. While not a soufflé in the French sense, it's completely delicious.

Start by baking sweet potatoes and letting them cool a bit before peeling, which can be done ahead of time. The potatoes are beaten until creamy with sugar, butter, eggs, vanilla, and half-and-half. Then, it's topped with a quick and easy brown sugar and pecan crumble and baked until puffed and crisp on top. (If you have a nut allergy or don't care for pecans, you can simply leave them out.)

This dish is usually served alongside stuffing, roast turkey, and green bean casserole, but it also pairs nicely with ham and pork chops for a tasty family dinner any time of year.


For the Soufflé:

For the Topping:

  • 2/3 cup brown sugar

  • 1/2 cup all-purpose flour

  • 1 teaspoon cinnamon

  • 1/4 teaspoon salt

  • 1 cup chopped pecans, optional

  • 4 tablespoons unsalted butter, melted

Steps to Make It

  1. Gather the ingredients.

  2. Preheat the oven to 425 F. Prick the sweet potatoes a few times with a fork and place them on a rimmed baking sheet lined with aluminum foil.

  3. Bake the sweet potatoes for 45 minutes to 1 hour and 15 minutes, depending on their thickness, until they can easily be pierced through by a paring knife or fork.

  4. Let cool enough to handle, peel, and add to a large mixing bowl or the bowl of a stand mixer. Reduce the oven temperature to 350 F and grease a 2 1/2-quart, 9 x 13, or 7 x 11 baking dish.

  5. To make the soufflé, beat the potatoes for a few minutes until well-mashed and smooth.

  6. Add the softened butter, sugar, brown sugar, and salt and beat until creamy, about 2 minutes. Add the eggs one at a time, beating until fluffy after each.

  7. Add the half-and-half and vanilla extract and beat well to combine. Add the mixture to the prepared baking dish.

  8. To make the topping, combine the brown sugar, flour, cinnamon, and salt in a small mixing bowl with a fork or your hands.

  9. Mix in the chopped pecans (if using) and the melted butter to form a crumbly dough.

  10. Crumble the topping over the sweet potato mixture evenly.

  11. Bake for 45 to 50 minutes, or until puffed, the topping is browned, and the middle has a slight jiggle. Let cool a few minutes before serving.


  • You can always bake the sweet potatoes ahead of time. Cool and store them, unpeeled, in a container in the fridge for up to a day.
  • Although baking the potatoes develops the best flavor and keeps the casserole from becoming watery, you can also boil them. Peel and cut them into 1-inch cubes. Bring a large pot filled about halfway with water to a boil and add the potatoes. Boil for about 15 minutes, or until the potatoes are fork tender. Drain well before using.

How to Store and Freeze Sweet Potato Soufflé

  • Store leftover sweet potato soufflé in an airtight container in the fridge for up to three days.
  • Reheat in the microwave or a 350 F oven for 15 minutes, or until warmed through.
  • You can also freeze this dish in an airtight, freezer-safe container for up to 6 months. Reheat from frozen in a 350 F oven for 20 to 30 minutes or until hot all the way through.

What Is the Difference Between Sweet Potato Casserole and Soufflé?

In American cuisine, sweet potato casserole and sweet potato soufflé are similar and sometimes interchangeable. Casseroles are sometimes topped with marshmallows, whereas sweet potato soufflé usually has a crunchy brown sugar topping and tends to be a bit fluffier. In French cuisine, a soufflé is a light and airy dish made using whipped egg whites.

Are Yams and Sweet Potatoes the Same?

The terms sweet potato and yam are used interchangeably in the U.S. to describe orange sweet potatoes. However, yams are a separate root vegetable common in Africa and are notably distinct from sweet potatoes. "Yams" in an American supermarket are often actually they are sweet potatoes.

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