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Close-up serving of sweet potato casserole with marshmallows and pecans.

Sweet Potato Casserole

Whipped fresh sweet potatoes baked with a pecan streusel topping and optional marshmallows. A must-have holiday side dish.
5 from 1 vote
Prep Time 20 minutes
Cook Time 47 minutes
Total Time 1 hour 7 minutes
Course Side Dish
Cuisine American
Servings 12 servings

Ingredients
  

For the sweet potato base:

  • 6 large sweet potatoes washed, peeled, and cut into cubes
  • ½ c butter melted
  • ½ c milk half-and-half, or heavy cream
  • ½ c brown sugar packed
  • 1 t ground cinnamon
  • ½ t salt

For the topping:

  • ½ c butter softened
  • ½ c brown sugar packed
  • ½ c all-purpose flour
  • 1 t ground cinnamon
  • ¾ c pecans chopped
  • Optional: 1–2 c mini marshmallows

Instructions
 

  • Preheat the oven to 375F. Grease a 9x13-inch baking dish. Bring a large pot of water to boil.
  • Lower heat to med-high. Ladle the cubes of sweet potatoes carefully into the bubbling water. Cook until fork-tender, 15 to 20 min. Drain.
  • Add cooked potato cube to large bowl with melted butter, milk/cream, brown sugar, cinnamon, and salt. Beat with a hand mixer until smooth.
  • Spread mixture into baking dish. Set aside.
  • In a medium bowl: Combine softened butter, brown sugar, flour, and cinnamon until crumbly; stir in pecans. Sprinkle over whipped sweet potatoes.
  • Bake for 12 min. Remove from the oven and top with marshmallows around the edges (if using). Bake for another 5 min until golden brown.
  • Serve hot.
  • Keep covered and chilled and it should be good in the fridge for 3 days. Reheat only portions at a time; reheating repeatedly makes it watery.
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