There’s something magical about the moment a sweet potato casserole comes out of the oven. The marshmallows puff into golden clouds, the pecans turn irresistibly crisp, and the warm scent of cinnamon and brown sugar drifts through the kitchen like a little holiday hug. It’s the kind of dish that makes everyone shuffle a little closer to the table, even before dinner is served.
This is the casserole that feels like home soft, buttery sweet potatoes beneath a crunchy pecan blanket, all crowned with melty marshmallows that stretch and toast just right. Whether it’s part of a holiday spread or a cozy weekend dinner, this recipe brings warmth to every bite and every moment around the table.
So slip on your comfiest sweater, preheat the oven, and let’s make something beautiful together.
Ingredients You’ll Need
Sweet Potato Filling
- 4 large sweet potatoes, peeled and chopped into large chunks
- ½ cup unsalted butter
- 1 cup brown sugar
- ½ teaspoon salt
- ½ teaspoon cinnamon
- 1 teaspoon vanilla extract
- ¼ teaspoon nutmeg
Soft, sweet, and warmly spiced this is the heart of the casserole.
Pecan Topping
- 4 tablespoons unsalted butter, melted
- ⅓ cup brown sugar
- 2 tablespoons all-purpose flour
- ½ teaspoon salt
- 1 ¼ cups finely chopped pecans
A crunchy, caramel-like layer that adds the perfect bite.
Marshmallow Layer
- 10 oz mini marshmallows
Fluffy, melty, golden magic.
How to Make It
Boil the Sweet Potatoes
Place your chopped sweet potatoes into a large saucepan and cover them with water. As they bubble away, the kitchen fills with that earthy sweet aroma that only sweet potatoes can bring.
Mash with Butter
Once they’re fork-tender and practically falling apart, drain the water and return them to the warm pan. Add the butter, letting it melt into every soft orange crevice as you mash. The mixture becomes velvety and fragrant.
Mix in the Sweetness
Sprinkle in the brown sugar, salt, cinnamon, vanilla, and nutmeg. Stir until everything blends into a silky, golden mixture that tastes like the holidays in a spoonful.
Prepare the Pecan Topping
In a separate bowl, mix the melted butter, brown sugar, flour, salt, and pecans. It should look like a crumbly praline topping sweet, buttery, and full of texture.
Assemble the Casserole
Grease a 9×13 baking dish and spread the sweet potato mixture evenly across the bottom. Add the pecan topping in a generous, even layer. Finally, cover the entire dish with mini marshmallows, like little snowy peaks ready to toast.
Bake to Golden Bliss
Bake at 350°F for 25–35 minutes, watching closely during the last stretch. The marshmallows should melt, puff, and take on that perfect golden hue without tipping into burnt territory.
Sweet Potato Casserole with Marshmallows
Equipment
- Large saucepan For boiling the sweet potatoes.
- Potato masher To mash the cooked sweet potatoes smoothly.
- mixing bowls For combining the pecan topping and other ingredients.
- 9×13-inch baking dish The casserole bakes in this dish.
- Oven Preheated to 350°F for baking the casserole.
Ingredients
- 4 large sweet potatoes, peeled and chopped into large chunks
- 1/2 cup unsalted butter
- 1 cup brown sugar
- 1/2 teaspoon salt
- 1/2 teaspoon cinnamon
- 1 teaspoon vanilla extract
- 1/4 teaspoon nutmeg
- 4 tablespoons unsalted butter, melted (for pecan topping)
- 1/3 cup brown sugar (for pecan topping)
- 2 tablespoons all-purpose flour
- 1/2 teaspoon salt (for pecan topping)
- 1 1/4 cups finely chopped pecan pieces
- 10 oz mini marshmallows
- cooking spray, for greasing the baking dish
Instructions
- Peel and cut the sweet potatoes into large chunks. Place them into a large saucepan and cover with water.
- Bring the pot to a boil and cook the sweet potatoes until they are fork tender and easily pierced. They should be soft enough to fall apart.
- Drain the sweet potatoes and return them to the warm saucepan. Add the 1/2 cup unsalted butter and mash with a potato masher until smooth and the butter is melted.
- Add the brown sugar, salt, cinnamon, vanilla extract, and nutmeg to the mashed sweet potatoes. Stir until everything is well combined and smooth.
- In a separate bowl, make the pecan topping by stirring together the melted butter, brown sugar, all-purpose flour, salt, and finely chopped pecans until evenly coated and crumbly.
- Grease a 9×13-inch baking dish with cooking spray. Spread the sweet potato filling evenly into the baking dish.
- Sprinkle the pecan topping evenly over the sweet potato layer.
- Add the mini marshmallows in an even layer over the pecan topping.
- Bake the casserole at 350°F (about 175°C) for 25–35 minutes, or until the filling is bubbly and the marshmallows are golden brown on top. Watch closely toward the end so the marshmallows toast without burning.
Notes
Nutrition
Cozy Tips & Serving Ideas
- Add a pinch of cloves or allspice for extra holiday warmth.
- Swap half the marshmallows for more pecans if you love it crunchier.
- A drizzle of maple syrup over the top before baking makes it extra dreamy.
- Serve alongside roasted turkey, ham, or even a cozy weeknight chicken dish.
- Leftovers reheat beautifully just pop under the broiler for 1–2 minutes to revive the marshmallow top.
A Cozy Final Note
There’s something so special about a dish that feels like a celebration all on its own. This Sweet Potato Casserole with Marshmallows brings joy, comfort, and a little sparkle to any table. Whether you’re sharing it with family, friends, or treating yourself on a chilly evening, it’s a recipe worth saving and savoring.