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Sweet Potato Soufflé Recipe
Ash Tyrrell

Sweet Potato Soufflé Recipe

I still remember the first time I made sweet potato soufflé for a family dinner, and the dish came back to the kitchen completely empty. There's something about the way the sweet potatoes bake up light and fluffy, then get topped with that buttery, pecan-crunch layer, that makes people go back for seconds without even thinking about it.
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Prep Time 20 minutes
Cook Time 40 minutes
Servings: 10
Ingredients Method Notes

Ingredients
  

  • Sweet potatoes about 4 large – the star of the dish, and I always pick ones that feel heavy for their size, since they tend to be sweeter
  • Granulated sugar – adds a light sweetness without overpowering the natural flavor of the potatoes
  • Light brown sugar – brings a deeper caramel-like note that white sugar alone can't give you
  • Eggs – help the filling set properly so it bakes up soft instead of runny
  • Whole milk or half and half – keeps the filling creamy; I don't recommend skim milk here it makes the texture thin
  • Unsalted butter melted – adds richness; using unsalted lets you control the salt level yourself
  • Vanilla extract – rounds out the flavor and I always use pure vanilla instead of imitation for a better taste
  • Salt – a small pinch balances the sweetness so the dish doesn't taste flat
  • Brown sugar for topping – creates that signature caramelized crunch on top
  • All-purpose flour for topping – binds the streusel together so it doesn't scatter
  • Chopped pecans – gives the topping its classic nutty crunch; toast them lightly first if you want extra flavor
  • Butter softened (for topping) – helps the streusel clump into those crumbly little pieces
  • Ground cinnamon – adds warmth that pairs beautifully with the sweet potatoes

Method
 

  1. Peel your sweet potatoes and cut them into even chunks so they cook at the same rate. Place them in a large pot, cover with cold water, and bring it to a boil over medium-high heat. Let them cook for about 15 to 20 minutes, until a fork slides through easily without any resistance.
  2. Drain the sweet potatoes well and return them to the pot or a large mixing bowl. Mash them with a potato masher or hand mixer until they're completely smooth, with no lumps left behind. This step matters more than people think, since lumpy filling bakes unevenly.
  3. Add the sugars, eggs, melted butter, milk, vanilla, and salt directly into the mashed sweet potatoes. Beat everything together until the mixture looks creamy and well combined. I like to taste a tiny bit here to check the sweetness before baking.
  4. In a separate bowl, combine the brown sugar, flour, cinnamon, and chopped pecans. Work the softened butter into the dry mixture with your fingers or a fork until it forms small, crumbly clusters. This streusel is what gives the soufflé its signature crunch.
  5. Spread the sweet potato filling evenly into a greased 9x13-inch baking dish. Sprinkle the streusel topping over the top in an even layer, covering every corner. Bake at 350°F for 35 to 40 minutes, until the topping turns golden brown and the filling is set but still soft underneath.

Notes

  • I always roast my sweet potatoes instead of boiling them when I have extra time, since it deepens the flavor and keeps the filling from getting watery
  • I toast my pecans in a dry skillet for a few minutes before adding them to the topping, and it brings out so much more flavor
  • I make sure my butter is truly soft, not melted, when mixing the streusel, because melted butter makes the topping greasy instead of crumbly
  • I taste the filling before baking so I can adjust the sweetness to my family's preference
  • I let the soufflé rest for 10 minutes after baking so it sets up and slices more cleanly