Holiday Sides

Maple Pecan Streusel Sweet Potato Casserole

Velvety whipped sweet potatoes crowned with a crunchy cinnamon-brown sugar pecan streusel and toasted golden marshmallows.

October 4, 2026 By Chef Clara 4.98 (188 votes)
Maple Pecan Streusel Sweet Potato Casserole
The Quick Takeaway

In a nutshell:This authentic southern american maple pecan streusel sweet potato casserole comes together in just 1 hour with simple ingredients. The chef's secret: roasting sweet potatoes whole in their skins caramelizes natural sugars without diluting the flavor with water. Perfect for home cooks seeking a dependable, restaurant-quality finish with minimal effort.

Prep Time 20 mins
Cook Time 40 mins
Total Time 1 hr
Cuisine Southern American
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This Maple Pecan Streusel Sweet Potato Casserole is the quintessential holiday crowd-pleaser that blurs the line between decadent holiday side dish and dessert. Roasted sweet potatoes are whipped silky-smooth with real maple syrup, cream, and warm spices, then baked under a dual crown of crunchy brown sugar pecans and toasted gooey marshmallows.

Key Equipment

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Chef's Pro-Tips

  • Roast instead of boiling: Roasting sweet potatoes whole in their skins caramelizes natural sugars without diluting the flavor with water.
  • Dual-topping harmony: Combining crunchy buttery pecans with miniature marshmallows satisfies both traditional family preferences.
  • Watch marshmallows closely: Marshmallows brown very quickly during the final 5 minutes of baking; keep an eye on them so they toast to golden perfection rather than burn.

Ingredients
10 servings

  • 4 lbs sweet potatoes, peeled, boiled or roasted until fork-tender
  • ⅓ cup pure maple syrup, Grade A amber
  • 4 tbsp unsalted butter, melted
  • ⅓ cup heavy whipping cream, or half-and-half
  • 2 large eggs, room temperature, lightly beaten
  • 1 tsp pure vanilla extract, high quality
  • 1 tsp ground cinnamon and nutmeg, warm fall spice blend
  • 1 cup pecans, roughly chopped for streusel
  • ½ cup dark brown sugar, packed, for streusel
  • ¼ cup all-purpose flour, for streusel
  • 4 tbsp cold unsalted butter, cubed, for streusel
  • 2 cups miniature marshmallows, for toasted topping
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Step-by-Step Instructions

1

Prep Sweet Potato Base

Preheat oven to 375°F (190°C). Grease a 9x13-inch baking dish. Place cooked hot sweet potatoes in a large bowl. Add maple syrup, 4 tbsp melted butter, heavy cream, vanilla, cinnamon, nutmeg, salt, and beaten eggs. Beat with a hand mixer until creamy and velvety smooth.

2

Spread in Dish

Smooth the whipped sweet potato mixture evenly into the prepared baking dish.

3

Make Pecan Streusel

In a separate bowl, mix chopped pecans, brown sugar, flour, and cold cubed butter using a fork or pastry cutter until crumbly streusel clusters form.

4

Bake Casserole

Scatter the pecan streusel evenly over the sweet potatoes. Bake for 30 minutes until bubbling around the edges.

5

Toast Marshmallows & Serve

Remove from oven and scatter mini marshmallows over the top. Return to oven for 5-8 minutes until marshmallows are puffed and toasted golden brown. Rest 10 minutes before serving.

Chef Clara's Kitchen Picks

Kitchen Essentials

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Nordic Ware Naturals Half Sheet, 2-Pack

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Woodenhouse Teak Wooden Spoons, 10-Pc

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Ultra Cuisine Stainless Cooling Rack Set of 2

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Frequently Asked Questions

Yes! Make the whipped sweet potato base and pecan streusel up to 2 days ahead and store separately in the fridge. Assemble and bake on Thanksgiving day.

Absolutely! The brown butter pecan streusel is rich, buttery, and crunchy enough to stand entirely on its own.

Whip the cooked sweet potatoes with an electric hand mixer for 2-3 minutes to eliminate any stringy fibers.