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Creamy Sweet Potato Casserole Recipe – Easy Toasted Marshmallow Topping

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This creamy sweet potato casserole features a silky sweet potato base topped with gooey, toasted marshmallows. It’s a nostalgic, crowd-pleasing comfort food perfect for holidays, potlucks, or cozy family dinners.

Ingredients

Scale
  • 3 pounds sweet potatoes, peeled and cut into chunks
  • 1/2 cup heavy cream (or half-and-half for lighter option)
  • 1/4 cup unsalted butter, melted
  • 1/3 cup brown sugar, packed (light or dark)
  • 2 large eggs, room temperature
  • 1 teaspoon pure vanilla extract
  • 1/2 teaspoon ground cinnamon
  • 1/4 teaspoon ground nutmeg (optional)
  • 1/4 teaspoon salt
  • 2 cups mini marshmallows
  • Optional: 1/2 cup chopped pecans or walnuts, toasted
  • Optional: 1/3 cup shredded coconut
  • Optional: 2 tablespoons maple syrup

Instructions

  1. Preheat oven to 375°F (190°C). Peel and dice sweet potatoes into 2-inch chunks. Place in a large pot, cover with water, and add a pinch of salt. Boil for 20-25 minutes until fork-tender. Drain well and let cool for 5 minutes.
  2. Transfer sweet potatoes to a large mixing bowl. Mash with a potato masher or beat with a hand mixer until smooth and creamy.
  3. Add heavy cream, melted butter, brown sugar, eggs, vanilla extract, cinnamon, nutmeg (if using), and salt. Mix until fully combined and silky.
  4. Taste and adjust sweetness or spices as desired.
  5. Lightly grease a 9×13-inch baking dish. Pour in the sweet potato mixture and smooth the top. Sprinkle optional nuts or coconut if desired.
  6. Evenly spread mini marshmallows over the casserole.
  7. Bake uncovered for 25-30 minutes, until marshmallows are golden and casserole is set.
  8. For extra toastiness, broil for 1-2 minutes, watching closely.
  9. Let casserole rest for 10 minutes before serving.

Notes

For extra flavor, roast sweet potatoes instead of boiling. Make the sweet potato base a day ahead and add marshmallows before baking. Adjust sugar and spices to taste. Use vegan marshmallows and coconut cream for dairy-free adaptation. Nuts and coconut are optional for added texture.

Nutrition

Keywords: sweet potato casserole, marshmallow topping, holiday side dish, Thanksgiving, comfort food, easy casserole, vegetarian, gluten-free, potluck, creamy sweet potatoes

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