There are some dishes that just feel like a hug — and Sweet Potato Casserole with Marshmallows is one of them. Whether it’s Thanksgiving, Christmas, or a random Tuesday when you need a little comfort, this dish brings cozy, caramelized magic straight to your table.
I still remember the first time I made it — I was trying to impress my family at Thanksgiving, and when that first golden-brown pan came out of the oven, everyone’s eyes lit up like I’d just unveiled dessert before dinner. (Which, honestly, this dish kind of is!)
This casserole is rich, creamy, nutty, and perfectly sweet — the kind of recipe that makes people go back for seconds and ask for the recipe before they leave.
Table of Contents
Why You’ll Love This Sweet Potato Casserole with Marshmallows
This Sweet Potato Casserole with Marshmallows is the perfect marriage of textures and flavors — creamy sweet potatoes, crunchy pecan topping, and those gooey, toasted marshmallows that turn every bite into nostalgia.
Here’s why you’ll want this on repeat all season long:
- It’s foolproof. A few simple steps and you’ve got a showstopper.
- It doubles as a dessert. Seriously, who can resist those marshmallows?
- It’s make-ahead friendly. You can prep it the night before and bake it when you’re ready to wow everyone.
- It’s a crowd favorite. Picky eaters? Sweet tooths? Everyone will find something to love here.
Ingredients You’ll Need
For the Sweet Potato Filling
- 4 large sweet potatoes, peeled and chopped into large chunks (around 9 cups worth)
- ½ cup unsalted butter, melted
- 1 cup brown sugar
- ½ teaspoon salt
- ½ teaspoon cinnamon
- 1 teaspoon vanilla extract
- ¼ teaspoon nutmeg
For the Pecan Topping
- 4 tablespoons unsalted butter, melted
- ⅓ cup brown sugar
- 2 tablespoons all-purpose flour
- ½ teaspoon salt
- 1 ¼ cups finely chopped pecan pieces
For the Marshmallow Layer
- 10 oz mini marshmallows
How to Make Sweet Potato Casserole with Marshmallows
Step 1: Prep the Sweet Potatoes
Peel and chop your sweet potatoes into large chunks. Place them in a large saucepan, cover with water, and bring to a boil.
Boil until fork-tender — they should practically melt when you poke them. Drain, then return them to the pot and mash until smooth.
Step 2: Flavor the Filling
Add the melted butter, brown sugar, salt, cinnamon, vanilla extract, and nutmeg. Mix until creamy and well combined. You can use a hand mixer if you like your filling extra silky.
Step 3: Make the Pecan Topping
In a separate bowl, stir together melted butter, brown sugar, flour, salt, and pecans. This topping adds that irresistible nutty crunch that balances the sweetness perfectly.
Step 4: Layer It Up
Grease a 9×13-inch baking dish with cooking spray. Spread the sweet potato mixture evenly in the dish, top with the pecan mixture, and then blanket it all with mini marshmallows.
Step 5: Bake to Golden Perfection
Bake at 350°F for 25–35 minutes, or until bubbly and the marshmallows are golden brown. Watch closely during the last few minutes — golden and gooey is perfect, burnt is… well, less cozy.
Cooking Tips for the Perfect Sweet Potato Casserole
- Too sweet? Cut back slightly on the brown sugar or add a sprinkle of flaky sea salt before serving.
- Nut-free option: Skip the pecans and top the potatoes directly with marshmallows. Still delicious, still crowd-pleasing.
- Make it ahead: Assemble the casserole (minus the marshmallows) a day in advance. Store in the fridge, then top and bake when ready.
- Texture tip: If you prefer a chunkier casserole, mash the sweet potatoes by hand instead of using a mixer.
A Little Kitchen Story
This recipe saved me during one of those chaotic Thanksgiving mornings — the kind where every burner is occupied, the turkey timer’s going off, and you’re wondering why you ever volunteered to host. While the turkey was doing its thing, this casserole baked quietly in the corner, filling the house with the warm smell of cinnamon and toasted marshmallows. By the time it hit the table, no one remembered the chaos — just the comfort.

FAQs About Sweet Potato Casserole with Marshmallows
Can I make Sweet Potato Casserole with Marshmallows ahead of time?
Yes! You can prepare everything except the marshmallow layer, store it in the fridge for up to 24 hours, then bake when you’re ready to serve.
Can I use canned sweet potatoes?
You can — just make sure to drain them well and reduce the added sugar a bit since canned versions tend to be sweeter.
What can I use instead of marshmallows?
If you want something less sweet, try topping it with a brown sugar-pecan streusel instead.
How do I store leftovers?
Keep leftovers in an airtight container in the fridge for up to 4 days. Reheat in the oven at 350°F until warm and toasty again.
Bring the Comfort Home
There’s just something magical about a Sweet Potato Casserole with Marshmallows — it’s the kind of dish that reminds you why you love gathering around the table. Whether it’s part of your holiday feast or a midweek pick-me-up, it’s pure, golden, sweet comfort in every bite.
So grab your casserole dish, preheat that oven, and let’s make a little kitchen magic together.
More Cozy Recipes to Complete Your Holiday Table
If you loved this Sweet Potato Casserole with Marshmallows, you’ll definitely want to explore a few more dishes that bring warmth, sweetness, and festive flavor to your table. Each of these recipes pairs beautifully with your holiday spread — from savory sides to show-stopping desserts. Here are a few delicious ideas to try next:
- Add a tart and creamy bite to your appetizer table with these irresistible Cranberry Cream Cheese Crescent Bites — they’re flaky, festive, and gone in seconds!
- Keep the cranberry theme going and impress your guests with a homemade Best Ever Cranberry Sauce that tastes better than anything from a can (trust me on this one!).
- Looking for the ultimate lineup of holiday comfort foods? You’ll adore this roundup of Best Thanksgiving Recipes — from mains to sides, it’s a feast of flavor and inspiration.
- And if you’re craving another cozy, Southern-inspired twist, try the creamy and nutty Southern Maple Sweet Potato Casserole — it’s the perfect complement or alternative to this marshmallow-topped classic.
Each of these recipes is packed with flavor, comfort, and that little touch of homemade love that turns any meal into a memory.
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Sweet Potato Casserole with Marshmallows
- Total Time: 55 minutes
- Yield: 8–10 servings 1x
Description
This Sweet Potato Casserole with Marshmallows is a cozy, crowd-pleasing holiday favorite! Creamy mashed sweet potatoes are layered with a buttery pecan topping and finished with gooey, golden-toasted marshmallows. Perfect for Thanksgiving, Christmas, or any special gathering that calls for comfort food made easy.
Ingredients
For the Sweet Potato Filling:
-
4 large sweet potatoes, peeled and chopped into large chunks (around 9 cups)
-
½ cup unsalted butter, melted
-
1 cup brown sugar
-
½ teaspoon salt
-
½ teaspoon cinnamon
-
1 teaspoon vanilla extract
-
¼ teaspoon nutmeg
For the Pecan Topping:
-
4 tablespoons unsalted butter, melted
-
⅓ cup brown sugar
-
2 tablespoons all-purpose flour
-
½ teaspoon salt
-
1 ¼ cups finely chopped pecan pieces
For the Marshmallow Layer:
-
10 oz mini marshmallows
Instructions
-
Prepare the Sweet Potatoes:
Peel and chop the sweet potatoes into large chunks. Place them in a large saucepan, cover with water, and bring to a boil. Cook until fork-tender and soft. -
Mash and Mix:
Drain the potatoes and return them to the pan. Mash until smooth, then mix in melted butter, brown sugar, salt, cinnamon, vanilla, and nutmeg until creamy and well blended. -
Make the Pecan Topping:
In a medium bowl, stir together melted butter, brown sugar, flour, salt, and chopped pecans until combined. -
Assemble the Casserole:
Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish with cooking spray. Spread the sweet potato mixture evenly in the dish, sprinkle with the pecan topping, and finish with an even layer of mini marshmallows. -
Bake:
Bake uncovered for 25–35 minutes, or until bubbly and the marshmallows are golden brown. Watch closely near the end to prevent burning. -
Serve & Enjoy:
Let cool slightly before serving warm for that perfect gooey texture!
Notes
Make-Ahead Tip: Assemble the casserole without marshmallows, cover, and refrigerate up to 24 hours. Add marshmallows just before baking.
Nut-Free Option: Skip the pecans for a smooth, creamy version that’s still delicious.
Storage: Store leftovers in an airtight container in the fridge for up to 4 days. Reheat at 350°F until warm.
Freezing: Freeze the base (without topping) for up to 2 months. Thaw, top, and bake fresh.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: side dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 portion (approx. 1/10 of recipe)
- Calories: 380 kcal
- Sugar: 31 g
- Sodium: 270 mg
- Fat: 16 g
- Saturated Fat: 7 g
- Unsaturated Fat: 8 g
- Trans Fat: 0 g
- Carbohydrates: 55 g
- Fiber: 4 g
- Protein: 3 g
- Cholesterol: 25 mg