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Easy Sweet Potato Casserole Recipe

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4.7 from 33 reviews

This easy sweet potato casserole is a classic holiday side dish featuring creamy mashed sweet potatoes blended with warm spices, brown sugar, and butter, topped with a golden layer of toasted mini marshmallows. It's comforting, sweet, and perfect for festive occasions or family dinners.

Ingredients

Sweet Potato Filling

  • 4 large sweet potatoes, peeled and cut into large pieces
  • 1 cup light brown sugar
  • ½ cup butter, melted
  • 1 teaspoon vanilla extract
  • ½ teaspoon cinnamon
  • ½ teaspoon salt
  • ¼ teaspoon nutmeg

Marshmallow Topping

  • 10 oz mini marshmallows

Instructions

  1. Prepare Sweet Potatoes: Peel the sweet potatoes and cut them into large chunks. Place them in a large saucepan and cover with water.
  2. Cook Sweet Potatoes: Bring the water to a boil and cook the sweet potatoes until tender and easily pierced with a fork, about 20 minutes.
  3. Mash Sweet Potatoes: Drain the sweet potatoes and return them to the saucepan. Use a potato masher to mash them thoroughly until smooth.
  4. Add Filling Ingredients: Stir in the melted butter, brown sugar, salt, cinnamon, vanilla extract, and nutmeg. Mix everything together until well combined and creamy.
  5. Prepare Baking Dish: Grease a 9×13-inch baking dish with cooking spray to prevent sticking.
  6. Assemble Casserole: Spread the sweet potato filling evenly into the prepared baking dish.
  7. Add Marshmallows: Top the sweet potato layer with mini marshmallows, spreading them out in an even layer.
  8. Bake: Bake the casserole in a preheated oven at 350 degrees Fahrenheit for 35 minutes, or until bubbly and the marshmallows are golden brown. Watch closely near the end to avoid burning.

Notes

  • For easier peeling, boil the sweet potatoes whole and then scoop out the flesh after cooking.
  • You can substitute the mini marshmallows with chopped pecans for a nutty topping.
  • To make the casserole ahead, assemble and refrigerate it without marshmallows, then add them just before baking.
  • If you prefer a less sweet version, reduce brown sugar to ¾ cup.
  • Use light brown sugar for a milder molasses flavor or dark brown sugar for a richer taste.