Sweet Potato Casserole with Marshmallows is a classic holiday dish that never fails to impress. This perfect combination of creamy sweet potatoes, crunchy pecans, and gooey, golden-brown marshmallows creates a side dish that is as comforting as it is delicious. Whether you’re preparing for a Thanksgiving feast or just looking for a unique way to enjoy sweet potatoes, this casserole is sure to become a family favorite.

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Why You’ll Love This Sweet Potato Casserole with Marshmallows
This Sweet Potato Casserole with Marshmallows offers the perfect balance of flavors and textures. The rich, sweet potato base is complemented by a crisp, nutty pecan topping and topped with gooey, toasted marshmallows. It’s the ultimate side dish that is both indulgent and satisfying. Plus, it’s simple to make and can be prepped in advance, making it a great addition to any holiday table.
Ingredients for Sweet Potato Casserole with Marshmallows
• Sweet Potatoes: The base of this casserole, sweet potatoes provide a creamy texture and natural sweetness.
• Brown Sugar: Adds sweetness and a caramel-like flavor to the casserole filling.
• Butter: Helps create a rich and creamy texture for the mashed sweet potatoes.
• Cinnamon: Gives the casserole a warm, spiced flavor that pairs beautifully with the sweet potatoes.
• Vanilla Extract: Enhances the natural sweetness of the sweet potatoes and adds depth to the flavor.
• Nutmeg: Adds a subtle, aromatic spice that complements the cinnamon and sweet potatoes.
• All-Purpose Flour: Used to create the crunchy pecan topping.
• Pecan Pieces: A delicious addition for a crunchy, slightly salty topping.
• Mini Marshmallows: The iconic topping that gives this casserole its signature gooey and golden brown finish.
Alternative Ingredient Suggestions
• For a dairy-free version, you can substitute the butter with coconut oil or plant-based butter.
• To make this dish gluten-free, simply swap out the all-purpose flour for a gluten-free flour blend.
• If you’re looking for a less sugary option, try using a sugar substitute like stevia or monk fruit sweetener in place of the brown sugar.
Step-by-Step Instructions for Making Sweet Potato Casserole with Marshmallows
- Prepare the Sweet Potatoes: Peel and cut the sweet potatoes into large chunks. Place them in a large saucepan and cover with water. Bring to a boil and cook the sweet potatoes until they are fork-tender, about 15-20 minutes.
- Mash the Sweet Potatoes: Drain the sweet potatoes and return them to the saucepan. Mash the sweet potatoes with a potato masher until smooth.
- Make the Sweet Potato Filling: Add melted butter, brown sugar, salt, cinnamon, vanilla extract, and nutmeg to the mashed sweet potatoes. Stir until well combined and creamy.
- Prepare the Pecan Topping: In a separate bowl, mix melted butter, brown sugar, flour, salt, and chopped pecans until fully incorporated.
- Assemble the Casserole: Grease a 9×13-inch baking dish with cooking spray. Spread the sweet potato filling evenly in the dish. Top with the pecan mixture, spreading it out evenly.
- Add Marshmallows: Evenly layer mini marshmallows on top of the pecan topping, covering the entire surface.
- Bake the Casserole: Preheat the oven to 350°F. Bake for 25-35 minutes, or until the marshmallows are golden brown and the casserole is bubbly. Be sure to watch carefully to avoid burning the marshmallows.

Tips & Tricks for the Best Sweet Potato Casserole
• Watch the Marshmallows: To achieve perfectly golden-brown marshmallows, keep an eye on the casserole during the last few minutes of baking. You want them to toast nicely without burning.
• Prep Ahead: This casserole can be made ahead of time. Simply prepare the sweet potato filling and store it in the refrigerator. When ready to bake, add the pecan topping and marshmallows.
• Storage: Leftovers can be stored in an airtight container in the refrigerator for 4-5 days. Reheat in the oven at 350°F or in the microwave.
Pairing Ideas and Variations for Sweet Potato Casserole with Marshmallows
This Sweet Potato Casserole with Marshmallows pairs wonderfully with other holiday favorites such as roasted turkey, glazed ham, or baked chicken. For a savory twist, try serving it alongside green beans or a fresh salad to balance the richness of the dish.
You can also experiment with different toppings, such as adding a sprinkle of shredded coconut for extra texture or using a combination of marshmallows and chopped candied pecans for a double crunch.
Health Benefits of Sweet Potato Casserole with Marshmallows
While Sweet Potato Casserole with Marshmallows is a rich and indulgent dish, sweet potatoes themselves are packed with vitamins and minerals. They are an excellent source of vitamin A, which supports eye health and immune function. They also contain fiber, which promotes digestion and helps maintain stable blood sugar levels. While the addition of marshmallows adds sweetness, this dish can still be part of a balanced meal when enjoyed in moderation.
Make-Ahead Tips for Busy Holidays
Preparing dishes in advance is a holiday lifesaver, and Sweet Potato Casserole with Marshmallows is perfect for making ahead. You can prepare the sweet potato filling a day or two before your event and store it in the fridge. When you’re ready to bake, simply add the pecan topping and marshmallows and bake until golden brown. This makes it a great option for a stress-free holiday dinner.
Sweet Potato Casserole with Marshmallows is more than just a side dish—it’s a crowd-pleasing treat that will have everyone coming back for more. Whether it’s for a special occasion or just a family dinner, this dish is sure to become a tradition in your home.
Conclusion: Sweet Potato Casserole with Marshmallows, A Holiday Favorite
Sweet Potato Casserole with Marshmallows is a timeless holiday dish that combines the best of sweet and savory flavors in a way that never gets old. The creamy sweet potato filling, topped with a crunchy pecan layer and gooey, golden-brown marshmallows, makes it a standout side dish for any celebration. Its ease of preparation, ability to be made ahead of time, and irresistible taste make it a must-try recipe that will soon become a beloved tradition in your home. Whether you’re preparing for Thanksgiving, Christmas, or a family gathering, this casserole is sure to be the star of your meal.
Frequently Asked Questions (FAQs) About Sweet Potato Casserole with Marshmallows
1. Can I make Sweet Potato Casserole with Marshmallows ahead of time?
Yes, you can prepare the sweet potato filling in advance. Simply make the filling, store it in an airtight container in the fridge, and add the pecan topping and marshmallows just before baking. This saves time, especially during the busy holiday season.
2. Can I substitute regular marshmallows with mini marshmallows?
Yes! Mini marshmallows are ideal for this recipe because they spread more evenly and brown beautifully. However, if you prefer regular marshmallows, they can be used as a substitute without any problem.
3. Can Sweet Potato Casserole with Marshmallows be made gluten-free?
Absolutely! To make this casserole gluten-free, simply swap the all-purpose flour for a gluten-free flour blend. The rest of the ingredients are naturally gluten-free, so you’ll still get the same delicious flavor and texture.
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Sweet Potato Casserole with Marshmallows
- Total Time: 55 minutes
- Yield: 8 servings 1x
- Diet: Vegetarian
Description
Sweet Potato Casserole with Marshmallows is a delicious holiday dish that combines creamy mashed sweet potatoes with a crunchy pecan topping and gooey marshmallows baked to golden perfection. It’s a perfect blend of savory and sweet, making it a crowd-pleasing side dish for any celebration, especially Thanksgiving.
Ingredients
- 4 large sweet potatoes, peeled and chopped
- 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 the topping)
- 1/3 cup brown sugar (for the topping)
- 2 tablespoons all-purpose flour (for the topping)
- 1/2 teaspoon salt (for the topping)
- 1 1/4 cups finely chopped pecan pieces
- 10 oz mini marshmallows
Instructions
- Peel and cut the sweet potatoes into large chunks. Place them in a large saucepan and cover with water. Bring to a boil and cook the sweet potatoes until fork-tender, about 15-20 minutes.
- Drain the sweet potatoes and return them to the saucepan. 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 well combined and creamy.
- In a separate bowl, make the pecan topping. Stir together the melted butter, brown sugar, flour, salt, and chopped pecans until fully combined.
- Grease a 9×13-inch baking dish with cooking spray. Spread the sweet potato filling evenly in the dish. Top with the pecan mixture, spreading it out evenly.
- Evenly layer mini marshmallows on top of the pecan topping, covering the entire surface.
- Preheat the oven to 350°F. Bake for 25-35 minutes, or until the marshmallows are golden brown and the casserole is bubbly. Watch carefully to avoid burning the marshmallows.
Notes
- For a dairy-free option, use coconut oil or plant-based butter instead of regular butter.
- If you’re looking to make this gluten-free, swap the all-purpose flour for a gluten-free flour blend.
- Ensure the marshmallows are evenly spread for a consistent golden-brown topping.
- Leftovers can be stored in an airtight container in the refrigerator for up to 4-5 days.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 418
- Sugar: 41g
- Sodium: 263mg
- Fat: 20g
- Saturated Fat: 8g
- Unsaturated Fat: 11g
- Trans Fat: 0.5g
- Carbohydrates: 61g
- Fiber: 3g
- Protein: 3g
- Cholesterol: 30mg
