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Easy 3-Ingredient Marshmallow Sweet Potato Casserole

3-ingredient marshmallow sweet potato casserole - featured image
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This easy 3-ingredient marshmallow sweet potato casserole is a quick and delicious side dish perfect for potlucks, family dinners, or holidays. With creamy sweet potatoes and a gooey toasted marshmallow topping, it’s a crowd-pleaser that comes together in under an hour.

Ingredients

Scale
  • 3 to 4 large sweet potatoes (about 2 to 2.5 pounds total)
  • 1 to 2 tablespoons unsalted butter or coconut oil
  • 2 to 3 cups mini marshmallows (or regular marshmallows, cut in half)
  • Salt (a pinch)
  • Optional: 1 to 2 tablespoons maple syrup or brown sugar
  • Optional: 1/2 teaspoon cinnamon or pumpkin pie spice

Instructions

  1. Preheat your oven to 375°F (190°C). Fill a large pot with enough water to cover the sweet potatoes by about an inch and bring to a boil.
  2. Peel and chop the sweet potatoes into 1 to 2-inch chunks.
  3. Add the sweet potatoes to the boiling water. Reduce heat to medium-high and cook for 15 to 20 minutes, until fork-tender.
  4. Drain the sweet potatoes and let them sit for a minute or two. Transfer to a mixing bowl. Add a pinch of salt and butter or coconut oil (if using). Mash until smooth, adding a tablespoon or two of reserved cooking water if needed.
  5. Grease an 8×8 inch or 9×9 inch baking dish. Spread the mashed sweet potatoes evenly in the dish.
  6. Sprinkle the mini marshmallows evenly over the sweet potatoes in a single layer.
  7. Bake for 15 to 20 minutes, until the marshmallows are puffed and golden brown. Watch closely after 12 minutes to prevent burning.
  8. Let the casserole rest for 5 minutes before serving. Serve warm.

Notes

For best results, don’t overboil the sweet potatoes. Watch the marshmallows closely as they can burn quickly. Let the casserole rest before serving to allow the marshmallows to set. Leftovers can be stored in the refrigerator for up to 4 days and reheated in the microwave or oven.

Nutrition

Keywords: sweet potato casserole, marshmallow sweet potato, easy side dish, holiday side dish, 3-ingredient recipe

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