When cozy season rolls around, there’s one dish that always steals the spotlight: Sweet Potato Casserole with Marshmallows. Creamy, warmly spiced sweet potatoes topped with a golden, gooey marshmallow layer make this classic recipe a must-have on any Thanksgiving or holiday table. It’s nostalgic, comforting, and incredibly easy to make—perfect for both seasoned cooks and last-minute holiday prep.
This easy sweet potato casserole is rich without being heavy, lightly spiced with cinnamon and nutmeg, and sweetened just enough with brown sugar to let the natural flavor of the sweet potatoes shine. Whether you’re hosting a big holiday feast or bringing a dish to share, this casserole is guaranteed to disappear fast.
Why You’ll Love This Sweet Potato Casserole
- Classic holiday favorite with timeless flavor
- Simple ingredients and easy preparation
- Perfect balance of creamy filling and toasted marshmallow topping
- Crowd-pleasing side dish for Thanksgiving, Christmas, or potlucks
- Make-ahead friendly, great for stress-free holidays
Ingredients Overview
Sweet Potato Filling
- Large sweet potatoes – peeled and cut into chunks
- Light brown sugar – adds warm, caramel sweetness
- Unsalted butter – melted for richness
- Vanilla extract – enhances flavor
- Cinnamon & nutmeg – classic holiday spices
- Salt – balances the sweetness
Marshmallow Topping
- Mini marshmallows – for that iconic gooey, toasted finish
Optional twists: Maple syrup instead of brown sugar, a splash of bourbon, or a sprinkle of chopped pecans for added texture.
How to Make Sweet Potato Casserole
1. Cook the Sweet Potatoes
Peel the sweet potatoes and cut them into large chunks. Place them in a large saucepan, cover with water, and bring to a boil. Cook until fork-tender, then drain well.
2. Mash and Season
Mash the sweet potatoes until smooth. Add melted butter, brown sugar, vanilla extract, cinnamon, nutmeg, and salt. Mix thoroughly until creamy and well combined.
3. Assemble the Casserole
Grease a 9×13-inch baking dish and spread the sweet potato mixture evenly inside.
4. Add Marshmallows
Sprinkle mini marshmallows evenly over the top, covering the surface without overcrowding.
5. Bake
Bake at 350°F (175°C) for 25–35 minutes, until the casserole is bubbly and the marshmallows are golden brown. Watch closely near the end to avoid burning.
Tips for Perfect Results
- Mash thoroughly for a silky-smooth texture
- Taste the filling before baking and adjust spices if needed
- For extra browning, briefly broil the casserole—but watch carefully
- Let it rest 5 minutes before serving for cleaner scoops
Serving Suggestions
- Serve hot alongside roast turkey, ham, or chicken
- Pair with green beans, Brussels sprouts, or cranberry sauce
- Garnish with a light dusting of cinnamon or nutmeg for presentation
Storage & Make-Ahead Tips
- Refrigerator: Store leftovers in an airtight container for up to 4 days
- Make-ahead: Assemble without marshmallows, refrigerate, then add topping before baking
- Reheat: Warm in the oven at 325°F until heated through
A Holiday Classic Worth Every Bite
This easy sweet potato casserole is the definition of holiday comfort food. Creamy, sweet, and topped with perfectly toasted marshmallows, it’s a dish that brings people together and creates lasting memories around the table. Whether it’s your first time making it or a family tradition, this recipe deserves a spot in your holiday lineup—every single year.
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