Sometimes a holiday table needs that one dish that makes everyone pause mid-conversation. For me, that moment always happens when I pull this sweet potato casserole with marshmallows out of the oven. The marshmallows turn this glossy, toasty brown, the pecans get crisp and fragrant, and suddenly everyone wanders into the kitchen asking if they can sneak a bite. I did not grow up loving sweet potato casserole, but once I started making my own version, everything changed. Now my kids ask for it before I even start planning Thanksgiving dinner.
This dish is warm, cozy, and just sweet enough. It has the creamy mashed sweet potatoes, the salty pecan crunch, and the soft marshmallow topping that turns into a golden blanket. It is simple, comforting, and the kind of recipe you make once and then bring back every year.
Jump to:
WHY YOU’LL LOVE THIS RECIPE
This casserole is a holiday must. Here are a few reasons it wins over even the sweet potato skeptics.
It is creamy and smooth in the center, yet crisp on top.
The pecan layer brings the perfect balance of salty and sweet.
The marshmallows melt slowly, turning golden and soft.
It is easy to prep ahead, which saves time on busy cooking days.
It feeds a crowd and makes the table feel complete.
In my house, this casserole has gained legendary status. Even family members who usually skip sweet potatoes always go back for seconds.
SWEET POTATO CASSEROLE BREAKDOWN
This recipe is built on mashed sweet potatoes that simmer until they fall apart. They mix with butter, sugar, cinnamon, vanilla, and a touch of nutmeg. The mixture becomes silky and warm.
The pecan topping is simple but powerful. Brown sugar, flour, melted butter, and chopped pecans come together to form a crumble. It bakes into a crisp layer that cracks gently when you scoop into it.
Then there are the marshmallows. Mini marshmallows cover the top and melt into a golden crust. As they bake, they soften into these sweet pockets that mix with the pecans. It is that combination that won my family over, and now I cannot imagine Thanksgiving without it.
INGREDIENTS AND EQUIPMENT
Sweet potatoes. Fresh sweet potatoes work best because they mash smoothly.
Butter. Helps the filling come together and adds richness.
Brown sugar. Sweetens both the filling and the topping.
Salt, cinnamon, vanilla, nutmeg. Warm spices that make the potatoes shine.
Flour. Helps the pecan topping hold together.
Pecans. They add crunch and flavor.
Mini marshmallows. They create that classic golden top.
Equipment
A large pot for boiling the potatoes.
A potato masher.
A mixing bowl for the topping.
A 9 by 13 baking dish.
STEP-BY-STEP HOW TO MAKE IT
Step 1.
Peel the sweet potatoes and cut them into large chunks. Smaller pieces cook faster.
Step 2.
Place the potatoes in a large pot and cover with water. Bring the pot to a boil and cook until the potatoes are fork tender.
Step 3.
Drain the potatoes and return them to the pot. Add the butter and mash everything until smooth. Stir in the sugar, salt, cinnamon, vanilla, and nutmeg.
Step 4.
Make the pecan topping. Stir together the melted butter, brown sugar, flour, salt, and pecans until the mixture looks crumbly.
Step 5.
Grease a 9 by 13 baking dish and spread the sweet potato filling evenly inside.
Step 6.
Sprinkle the pecan topping across the filling.
Step 7.
Cover the top with mini marshmallows in a full layer.
Step 8. Bake at 350 degrees for 25 to 35 minutes. Watch the marshmallows near the end so they brown without burning.
TIPS AND VARIATIONS
Cut the potatoes into chunks. This speeds up the cooking time.
Use fresh marshmallows. They melt and brown more evenly.
Keep an eye on the top. Marshmallows can brown quickly.
Swap the pecans. Walnuts or almonds also work.
Reduce the sugar. You can cut the brown sugar in the filling if you prefer it less sweet.
SERVING SUGGESTIONS
Serve this casserole with classic holiday dishes like roast turkey, stuffing, mashed potatoes, or green beans.
If you are hosting a large gathering, place it on the table last so the marshmallows stay warm and soft.
For leftovers, enjoy a small scoop with breakfast. I always do.
STORAGE AND REHEATING
Store leftovers for 4 to 5 days in an airtight container in the refrigerator.
Reheat in the oven at 350 degrees or warm individual servings in the microwave.
Prep ahead by making the sweet potato layer one day early. Keep it in the refrigerator, then add the topping and marshmallows before baking.
MORE RECIPES YOU MAY LIKE
Honey Butter Skillet Corn
Broccoli Casserole with Ritz Crackers
Cheesy Cornflake Potatoes
📖 Recipe
SWEET POTATO CASSEROLE WITH MARSHMALLOWS
Description
This classic sweet potato casserole with marshmallows is a must make side dish for Thanksgiving and the holidays! Wow your family with this amazing recipe.
Ingredients
- 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
- 4 tablespoons unsalted butter, melted (for topping)
- ⅓ cup brown sugar (for topping)
- 2 tablespoons all purpose flour
- ½ teaspoon salt (for topping)
- 1 ¼ cups finely chopped pecan pieces
- 10 oz mini marshmallows
Instructions
- Peel and cut the sweet potatoes into large chunks and place them into a large sauce pan. Cover them with water and bring it to a boil.
- Boil the sweet potatoes until they are fork tender and easily pierced with a fork. They should fall apart easily.
- Drain the sweet potatoes and add them back to the sauce pan. Add the butter and mash them with a potato masher. The butter will melt from the heat of the sweet potatoes. Add brown sugar, salt, cinnamon, vanilla extract, and nutmeg. Mix until well combined.
- In a separate bowl, stir together the melted butter, brown sugar, all purpose flour, salt, and pecan pieces until combined.
- Grease a 9x13 baking dish with cooking spray.
- Add the sweet potato filling and spread it out evenly.
- Spread the pecan topping evenly over the top of the sweet potatoes.
- Add the mini marshmallows over the top in an even layer.
- Bake at 350°F for 25–35 minutes, or until bubbly and the marshmallows are golden brown. Watch closely towards the end to prevent burning.
Notes
Leftover casserole can be stored in an airtight container in the refrigerator for 4-5 days.
FAQ
Yes. Make the sweet potato filling one day early. Add the pecans and marshmallows right before baking.
You can, but the texture will be softer. Fresh potatoes hold up better.
Boil and mash the potatoes the day before. This small step makes the rest of the recipe quick.
Every oven is different. Move the casserole to a lower rack if needed.
From my kitchen to yours
Each time I make this casserole, I remember why it has become such a holiday favorite in my home. It is simple, comforting, and full of texture. The moment you scoop into it and hit the warm potatoes, crisp pecans, and soft marshmallows, you understand why it always disappears fast. I hope it brings the same joy to your table.
Comments
No Comments