Southern Sweet Potato Casserole with Pecan Streusel

Creamy sweet potatoes topped with a crunchy caramelized brown sugar and pecan crumble come together in this light, fluffy sweet potato soufflé-style casserole — an ideal holiday side dish.

Blue and White plate with Sweet Potato Pecan Casserole on the plate.

Last year my cousin shared her family recipe for what she originally called Sweet Potato Soufflé. I’d always made candied yams for Thanksgiving — lots of butter, brown sugar, and marshmallows — so I wasn’t eager to change. I’m glad I gave this one a try. It’s light, easy to prepare, and has a texture that reminds me of a crustless sweet potato pie. This dish deserves a spot on the holiday table.

The recipe is straightforward and perfect for busy holiday cooking. You can use fresh baked sweet potatoes, yams, or canned sweet potatoes for convenience. I prefer canned for quick prep, but either works beautifully.

How To Make Easy Sweet Potato Pecan Casserole

Drain two large cans of sweet potatoes and mash them in a large bowl with a potato masher or a hand mixer until you have about 3 cups of prepared sweet potatoes or yams. If you use a mixer, be careful — the mixture can splatter when you start mixing.

Bowl with mashed sweet potatoes.

Add 1/2 cup melted butter, 1 cup packed brown sugar, 1 teaspoon vanilla, and 2 eggs. Mix until well combined; a few small lumps are fine. Pour the mixture into a greased 9 x 13-inch casserole dish and spread evenly.

Adding eggs, brown sugar, melted butter, and vanilla to the sweet potato puree.

Pre-baked Sweet Potato Casserole

Preheat the oven to 350°F (175°C). Place the casserole in the oven and bake for about 15 minutes while you prepare the crumb topping.

Sweet Potato casserole base mixed and poured into a greased casserole.

Pecan Brown Sugar Crunch Topping

In a small bowl combine 1/3 cup chilled butter cut into pieces, 1 cup packed brown sugar, 1/3 cup flour, and 1 cup chopped pecans. Use a fork or your fingers to rub the butter into the dry ingredients until pea-sized crumbs form. This yields a crisp, caramelized topping that contrasts perfectly with the creamy sweet potatoes.

Bowl with butter, brown sugar, and pecans ready to be mixed for crumb topping.

Remove the casserole from the oven using oven mitts and evenly sprinkle the pecan crumb topping over the sweet potato layer, taking care not to touch the hot dish.

Mixing the Crumb topping ingredients with my hands.

Finishing Bake for Sweet Potato Casserole

Return the casserole to the oven and bake for another 35–40 minutes, until the center is set and the dish no longer jiggles. When it comes out of the oven it should be slightly firm. Let it rest briefly, then admire the golden, crunchy topping before serving.

sweet potato casserole with the crumb topping sprinkled all over the top.

This casserole releases warm fall aromas — caramelized sugar, toasted nuts, and baking spice. My cousin suggested renaming the dish from “soufflé” to Sweet Potato Pecan Casserole since it isn’t a true soufflé, and the new name fits perfectly. Call it whatever you like — just call it delicious.

Baked Sweet Potato Pecan Casserole pulled right out of the oven in a casserole dish.

The combination of creamy sweet potatoes and the crunchy pecan-brown-sugar topping creates a wonderful contrast of textures. If you like, add a pinch of warm spice — nutmeg, allspice, or cardamom would be lovely additions.

Sweet Potato Pecan Casserole in the casserole dish and a plate full of the casserole.

I’m grateful my cousin shared this family favorite. It’s easy to make, stores well, and is a crowd-pleaser at holiday dinners.

Tips for making Sweet Potato Casserole

  1. You can make this recipe with sweet potatoes, yams, or even pumpkin for a twist.
  2. The prepared sweet potato base can be made ahead and refrigerated for 2–3 days. Assemble the crumb topping the day you plan to bake.
  3. You can freeze the assembled base for up to a month. Thaw before baking for best, predictable results — otherwise adjust baking time as needed.
Serving of Sweet Potato Casserole on Blue Transferware plate.

Here are a few of my other favorite Holiday Side Dish Recipes

  • Savory Herbed Instant Pot Mashed Potatoes
  • Fresh Green Bean Casserole
  • Homemade Turkey Gravy
  • Best Sausage and Herb Stuffing
  • Cranberry Orange Jello Salad
  • Spiced Cranberry Orange Sauce
  • Roasted Herbed Acorn Squash and Pears
  • Baked Sweet Potato and Potato Medley
  • Southern Black Eyed Peas

I hope you serve this easy, flavorful side dish at your Thanksgiving or holiday meal — even guests who aren’t usually sweet potato fans often love this pecan-topped casserole.

Thanks so much for stopping by. Happy nesting!

Photo of Norine with her signature

Printable Recipe

Sweet Potato Pecan Casserole in the casserole dish and a plate full of the casserole.

Sweet Potato Pecan Casserole

Creamy sweet potatoes topped with a crunchy caramelized brown sugar and pecan crumble combine to make a fluffy, comforting holiday side dish.
Prep Time 15 mins
Cook Time 1 hr
Total Time 1 hr 15 mins
Servings 12 servings
Calories 422 kcal

Ingredients

  • 3 cups mashed sweet potatoes or yams (prepared)
  • 1/2 cup melted butter
  • 1 cup packed brown sugar
  • 1 teaspoon vanilla
  • 2 eggs

Crumb Topping

  • 1/3 cup chilled butter, cut into small pieces
  • 1/3 cup flour
  • 1 cup packed brown sugar
  • 1 cup chopped pecans

Instructions

  1. Preheat oven to 350°F (175°C). Prepare a 9 x 13-inch pan with non-stick spray.
  2. In a large bowl, mix mashed sweet potatoes, melted butter, 1 cup brown sugar, vanilla, and eggs until combined and mostly smooth.
  3. Pour the sweet potato mixture into the prepared pan and bake at 350°F for about 15 minutes while you make the topping.
  4. For the crumb topping, combine chilled butter, flour, brown sugar, and chopped pecans. Rub with a fork or your fingers until small, pea-sized crumbs form.
  5. Carefully remove the casserole from the oven, sprinkle the crumb topping evenly over the top, and bake an additional 35–40 minutes until the center is set and the casserole no longer jiggles. Remove from oven and serve warm.

Nutrition

Serving: 1 Cup
Calories: 422 kcal
Carbohydrates: 51 g
Protein: 3 g
Fat: 24 g
Saturated Fat: 11 g
Trans Fat: 1 g
Cholesterol: 76 mg
Sodium: 168 mg
Fiber: 2 g
Sugar: 38 g

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