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Cozy Sweet Potato Casserole with Marshmallow Swirls (Easy)

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This creamy sweet potato casserole features gooey marshmallow swirls throughout, not just on top. It’s a quick and easy comfort food that converts even sweet potato skeptics, perfect for cozy evenings and holiday gatherings.

Ingredients

Scale
  • 3 large or 4 medium sweet potatoes (about 2 pounds total), peeled and cubed
  • 4 tablespoons unsalted butter, melted
  • ½ cup brown sugar, packed
  • 2 large eggs, room temperature
  • ¼ cup whole milk (or 2% or unsweetened oat milk for dairy-free)
  • 1 teaspoon vanilla extract
  • 1 teaspoon ground cinnamon
  • ¼ teaspoon ground nutmeg
  • ½ teaspoon salt
  • 3 cups regular-sized marshmallows, divided (2 cups for swirl, 1 cup for top)

Instructions

  1. Preheat oven to 350°F (175°C). Fill a large pot with water and bring to a boil over high heat.
  2. Peel and cube sweet potatoes into 1-inch pieces (about 6 cups). Boil for 12-15 minutes until fork-tender. Drain well.
  3. Transfer drained sweet potatoes to a mixing bowl. Mash with a potato masher until mostly smooth with a few lumps, or use a hand mixer for a smoother texture.
  4. Add melted butter, brown sugar, room-temperature eggs, milk, vanilla extract, cinnamon, nutmeg, and salt. Stir until well combined and smooth.
  5. Gently fold in 2 cups of marshmallows with a rubber spatula using 3-4 strokes, leaving distinct pockets of marshmallow.
  6. Pour mixture into a greased 9×13-inch baking dish and spread evenly.
  7. Sprinkle remaining 1 cup of marshmallows evenly over the top. Do not press down.
  8. Bake for 25-30 minutes until marshmallows are golden brown and puffed, and edges are bubbling. For extra browning, broil for 1-2 minutes, watching carefully.
  9. Let rest for 5 minutes before serving.

Notes

For make-ahead: Assemble casserole (without top marshmallows) up to 24 hours in advance, refrigerate. Let sit at room temperature 30 minutes before baking, add top marshmallows, and bake as directed, adding 5-7 minutes if needed. For vegan version: Use vegan butter, flax eggs (1 tbsp ground flaxseed + 3 tbsp water per egg), unsweetened oat milk, and vegan marshmallows (e.g., Dandies). For less sweet version: Reduce brown sugar to ⅓ cup and use only 2 cups marshmallows total. For savory-sweet twist: Add ⅓ cup crumbled cooked bacon to sweet potato mixture before folding in marshmallows.

Nutrition

Keywords: sweet potato casserole, marshmallow swirl, easy sweet potato casserole, Thanksgiving side dish, comfort food, holiday recipe

Find it online: https://fizzlefork.com/cozy-sweet-potato-casserole-with-marshmallow-swirls-easy/