Sweet potato casserole with marshmallows is a quintessential dish for holiday gatherings, especially during Thanksgiving. This sweet and savory side combines mashed sweet potatoes with a rich, crunchy pecan topping and toasted marshmallows, creating the perfect balance of flavors. The creamy, sweet potato base is complemented by the crunchy, caramelized pecans and the delightful, gooey marshmallow topping, making it a beloved family favorite year after year.

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Why Sweet Potato Casserole with Marshmallows is a Must-Have
This sweet potato casserole with marshmallows is more than just a side dish—it’s a showstopper! Not only is it easy to make, but it also brings a festive touch to your dinner table. The creamy sweet potato filling combined with the crunchy, nutty pecan topping and fluffy, golden marshmallows creates an irresistible blend of textures and flavors. It’s a holiday classic that is guaranteed to impress everyone, from kids to adults. Plus, this casserole can be made in advance, saving you valuable time on the big day!
Ingredients For Sweet Potato Casserole with Marshmallows
For the sweet potato filling:
• Sweet Potatoes: Fresh, tender sweet potatoes form the base of this casserole, providing a creamy texture and natural sweetness.
• Brown Sugar: Adds a rich, caramel-like sweetness to balance the natural flavor of the sweet potatoes.
• Butter: Brings a rich, creamy flavor and helps to bind the ingredients together.
• Spices: A pinch of salt, cinnamon, nutmeg, and vanilla extract gives the casserole its signature warm, comforting flavor.
For the pecan topping:
• Pecan Pieces: Toasted pecans provide a crunchy texture and nutty flavor that pairs beautifully with the sweet potatoes.
• Butter: Used to create a golden, crispy topping.
• Brown Sugar: Sweetens the topping, contributing to the caramelized texture when baked.
• Flour: Helps bind the pecan topping and creates a slightly crumbly texture.
For the marshmallow layer:
• Mini Marshmallows: These create a gooey, sweet topping that adds a fun twist to the dish.
Alternative Ingredient Suggestions
• Dairy-Free: Swap the butter with vegan butter or coconut oil for a dairy-free version.
• Nut-Free: If you’re allergic to nuts, substitute the pecans with crushed graham crackers or a crunchy oat topping.
• Spices: For a twist on the classic flavor, try adding a touch of pumpkin pie spice or allspice in place of cinnamon and nutmeg.
Step-by-Step Instructions
- Prepare the Sweet Potatoes: Peel and cut the sweet potatoes into large chunks. Boil them in a large pot of water until fork-tender, about 15-20 minutes.
- Mash the Sweet Potatoes: Drain the boiled sweet potatoes and return them to the pot. Mash them using a potato masher until smooth.
- Mix the Filling: Add butter, brown sugar, salt, cinnamon, vanilla extract, and nutmeg to the mashed sweet potatoes. Stir until fully combined.
- Prepare the Pecan Topping: In a separate bowl, melt butter and mix with brown sugar, flour, salt, and pecans until the ingredients are well combined.
- Assemble the Casserole: Grease a 9×13-inch baking dish with cooking spray. Spread the mashed sweet potatoes evenly in the dish. Sprinkle the pecan topping over the sweet potato layer.
- Add Marshmallows: Cover the entire top with mini marshmallows in an even layer.
- Bake the Casserole: Bake at 350°F (175°C) for 25-35 minutes, or until the marshmallows are golden brown and bubbly. Keep a close eye on the casserole towards the end to ensure the marshmallows don’t burn.
Tips & Tricks
• Perfect Marshmallows: For that golden-brown marshmallow topping, make sure to watch the casserole carefully towards the last few minutes of baking.
• Consistency: If you prefer a smoother casserole, you can blend the mashed sweet potatoes with a hand mixer or food processor for an extra creamy texture.
• Storage: Leftovers can be stored in an airtight container in the fridge for up to 4-5 days. Reheat in the oven or microwave until warm.
• Make-Ahead: Prepare the sweet potato filling in advance and store it in the fridge. When ready to bake, top it with the pecan crumble and marshmallows and bake as instructed.
Pairing Ideas and Variations
Sweet potato casserole with marshmallows pairs wonderfully with traditional holiday dishes like roast turkey, stuffing, and green bean casserole. For an added twist, consider serving it alongside glazed carrots or a light salad to balance the richness of the casserole.
You can also experiment with different variations:
• Spicy Version: Add a pinch of cayenne pepper to the sweet potato filling for a bit of heat.
• Gluten-Free: Replace the all-purpose flour in the pecan topping with gluten-free flour or almond flour.
• Vegan: Use vegan butter and mini marshmallows to make this dish completely plant-based.
Why This Recipe Is a Holiday Favorite
Sweet potato casserole with marshmallows is not just a side dish; it’s an experience. With its sweet, creamy base, crunchy pecan topping, and perfectly toasted marshmallows, it captures the essence of comfort food and holiday traditions. Whether you’re serving it for Thanksgiving, Christmas, or a family dinner, this recipe is sure to be a hit!
By following these easy steps and tips, you can create a delicious sweet potato casserole that will have everyone asking for seconds. It’s the perfect addition to any holiday table, combining nostalgia with a twist on a classic favorite.
Conclusion
Sweet potato casserole with marshmallows is the perfect blend of comfort, flavor, and holiday cheer. This dish combines the creamy richness of sweet potatoes with the sweetness of brown sugar, the crunchiness of toasted pecans, and the delightful fluffiness of mini marshmallows. Whether you’re preparing it for a family gathering, holiday dinner, or as a side to complement your main course, this casserole is sure to be the star of the table. With its easy-to-follow instructions and make-ahead options, it’s a simple yet impressive dish that brings joy to both the cook and the guests. Don’t be surprised if this recipe becomes a tradition in your home for years to come!
FAQ About Sweet Potato Casserole with Marshmallows
Can I make sweet potato casserole with marshmallows in advance?
Yes, you can make the casserole ahead of time! Prepare the sweet potato filling and store it in an airtight container in the refrigerator. When you’re ready to bake, simply add the pecan topping and marshmallows, then bake as instructed.
How can I store leftover sweet potato casserole?
Leftover sweet potato casserole with marshmallows can be stored in an airtight container in the refrigerator for up to 4-5 days. Reheat it in the oven at 350°F (175°C) or in the microwave until warm.
Can I freeze sweet potato casserole with marshmallows?
Yes, you can freeze this casserole. After assembling the casserole, cover it tightly with plastic wrap and foil, and freeze it for up to 3 months. When ready to bake, thaw it overnight in the fridge and bake as directed.
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Sweet Potato Casserole with Marshmallows
- Total Time: 55 minutes
- Yield: 8 servings 1x
Description
Sweet potato casserole with marshmallows is a delicious and festive side dish that combines creamy mashed sweet potatoes, a crunchy pecan topping, and gooey mini marshmallows. It’s a holiday classic that’s perfect for Thanksgiving or any family gathering, offering a wonderful balance of sweet, savory, and crunchy textures.
Ingredients
- 4 large sweet potatoes, peeled and chopped into large chunks
- 1/2 cup unsalted butter, melted
- 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 topping)
- 1/3 cup brown sugar (for topping)
- 2 tablespoons all-purpose flour
- 1/2 teaspoon salt (for topping)
- 1 1/4 cups finely chopped pecans
- 10 oz mini marshmallows
Instructions
- Peel and cut the sweet potatoes into large chunks. Boil them in a large pot of water until fork-tender, about 15-20 minutes.
- Drain the sweet potatoes and return them to the pot. Mash them with a potato masher until smooth.
- Add melted butter, brown sugar, salt, cinnamon, vanilla extract, and nutmeg to the mashed sweet potatoes. Stir until fully combined.
- In a separate bowl, melt the butter for the pecan topping. Mix it with brown sugar, flour, salt, and chopped pecans until combined.
- Grease a 9×13-inch baking dish with cooking spray. Spread the mashed sweet potatoes evenly in the dish.
- Sprinkle the pecan topping evenly over the sweet potatoes.
- Top with mini marshmallows, spreading them in an even layer across the casserole.
- Bake at 350°F (175°C) for 25-35 minutes, or until the marshmallows are golden brown and bubbly. Watch closely to avoid burning the marshmallows.
Notes
- Ensure the marshmallows are golden brown but not burned by monitoring them closely in the final few minutes of baking.
- This casserole can be made ahead by preparing the sweet potato filling in advance and refrigerating it. Add the pecan topping and marshmallows just before baking.
- If you’re making this dish for a crowd, it’s easy to double the recipe for a larger group.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 418 kcal
- Sugar: 41g
- Sodium: 263mg
- Fat: 20g
- Saturated Fat: 8g
- Unsaturated Fat: 11g
- Trans Fat: 0.5g
- Carbohydrates: 61g
- Fiber: 3g
- Protein: 3g
- Cholesterol: 30mg
