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Easy Sweet Potato Casserole With Marshmallows

sweet potato casserole with marshmallows - featured image

This classic holiday side dish features creamy sweet potatoes topped with golden, gooey marshmallows. It’s quick to prepare, crowd-pleasing, and perfect for Thanksgiving, Christmas, or any cozy family dinner.

Ingredients

Scale
  • 3 lbs sweet potatoes, peeled and cut into chunks
  • 1/2 cup whole milk
  • 1/3 cup unsalted butter, melted
  • 2 large eggs, room temperature
  • 1/2 cup light brown sugar, packed
  • 1/2 tsp ground cinnamon
  • 1/2 tsp vanilla extract
  • 1/4 tsp salt
  • 2 cups mini marshmallows
  • Optional: 1/2 cup chopped pecans
  • Optional: 2 tbsp unsalted butter, melted (for pecan topping)
  • Optional: 2 tbsp brown sugar (for pecan topping)

Instructions

  1. Peel and cut sweet potatoes into 2-inch chunks. Place in a large pot, cover with water, and bring to a boil over medium-high heat. Cook for 15-20 minutes until fork-tender. Drain well and let cool slightly.
  2. Transfer cooked sweet potatoes to a large mixing bowl. Mash until smooth and creamy using a potato masher, fork, or hand mixer.
  3. Add milk, melted butter, beaten eggs, brown sugar, cinnamon, vanilla extract, and salt to the mashed sweet potatoes. Whisk together until fully combined.
  4. Grease a 9×13-inch baking dish. Pour sweet potato mixture into the dish and spread evenly.
  5. Optional: In a small bowl, mix chopped pecans, melted butter, and brown sugar. Sprinkle over the sweet potato mixture.
  6. Preheat oven to 350°F. Bake casserole (without marshmallows) for 25 minutes.
  7. Remove casserole from oven. Scatter mini marshmallows evenly over the top. Return to oven and bake for 10-15 minutes until marshmallows are golden and puffed.
  8. Optional: Broil for 1-2 minutes for extra color, watching closely to prevent burning.
  9. Let casserole sit for 10 minutes before serving.

Notes

For a dairy-free version, substitute almond or oat milk and plant-based butter. Use vegan marshmallows for a vegan option. Add orange zest or pumpkin pie spice for extra flavor. Make ahead by preparing the base and topping a day in advance; add marshmallows and bake before serving. If using canned sweet potatoes, drain well and reduce milk by half.

Nutrition

Keywords: sweet potato casserole, marshmallows, holiday side dish, Thanksgiving, Christmas, easy recipe, comfort food, classic, gluten-free, vegetarian