Sweet potato casserole is the ultimate holiday side dish, a comforting, crowd-pleasing favorite that brings together the natural sweetness of sweet potatoes and a rich, buttery topping. Whether served at Thanksgiving, Christmas, or any family gathering, this dish is a guaranteed hit. The smooth, mashed sweet potatoes are elevated with a sweet, crunchy topping that adds both texture and flavor, making it the perfect complement to any savory main course.
The base of the casserole starts with mashed sweet potatoes, which can be either boiled or roasted to bring out their natural sweetness. After they’re softened, they’re mashed with butter, brown sugar, vanilla, and a hint of cinnamon, nutmeg, or even maple syrup for extra depth of flavor. The result is a creamy, velvety filling that’s both sweet and savory, with a rich texture that’s just the right amount of indulgent.
What makes this dish even more special is the topping. A classic sweet potato casserole topping often features a mix of crushed pecans, brown sugar, and a little butter, which bakes into a sweet, crunchy crust. Some versions use marshmallows for an extra layer of sweetness, toasty golden edges, and a chewy texture that contrasts perfectly with the creamy sweet potatoes underneath.
This dish is incredibly easy to prepare ahead of time, making it an ideal choice for a holiday meal or potluck. Once assembled, it can be stored in the refrigerator and baked just before serving, saving time on the big day. It also reheats well, so you can enjoy leftovers for days after the feast.
Sweet potato casserole is the perfect blend of comfort and elegance. The combination of creamy sweet potatoes and a crunchy topping offers the ideal balance of textures and flavors, making it a holiday essential that brings both warmth and joy to the table. Whether you’re preparing it for a special occasion or a weeknight dinner, it’s sure to become a family favorite.
While sweet potato casserole may be decadent in flavor, it also offers some nutritional value. Sweet potatoes are rich in vitamins A and C, fiber, and antioxidants. They are known to support eye health, boost the immune system, and promote healthy digestion. Additionally, the marshmallow topping can provide a sweet touch without overpowering the wholesome benefits of the sweet potatoes.
Whether you’re preparing a holiday feast or simply craving a comforting side dish, this sweet potato casserole with marshmallow topping is sure to be a hit. Its popularity and nutritional benefits make it an excellent choice for indulgence with a touch of guilt-free satisfaction.

Ingredients
- 4 cups sweet potatoes mashed
- 1/2 cup granulated sugar
- 2 eggs beaten
- 1/2 cup milk
- 1/4 cup butter melted
- 1 tsp vanilla extract
- 1/2 tsp salt
- 1/2 cup brown sugar packed
- 1/2 cup all-purpose flour
- 1/4 cup butter melted
- 1 cup mini marshmallows
Instructions
- Preheat oven to 350 degrees F (175 degrees C).
- In a large bowl, mix together mashed sweet potatoes, granulated sugar, eggs, milk, 1/4 cup melted butter, vanilla extract, and salt. Spread evenly in a 9x13 inch baking dish.
- In a separate bowl, mix together brown sugar, flour, and 1/4 cup melted butter until crumbly. Stir in mini marshmallows. Sprinkle mixture over sweet potato mixture.
- Bake for 30 to 40 minutes, or until topping is golden brown.
I only had 3 cups of sweet potatoes and used less sugar. It turned out fine, but maybe a bit undercooked. Next time, I’ll follow the recipe better.
Not bad, but I think it could use some cinnamon or nutmeg for flavor. Just a suggestion!
I totally agree! A little cinnamon would really make it pop! Gonna try that next time.
Cinnamon? Really? I thought this was sweet enough. Marshmallows already sweeten it a lot!
This was absolutely delicious! The sweet potatoes were so creamy and the marshmallows on top made it extra special. Will definitely make again!
Is this supposed to be a dessert? Sweet potato with marshmallows seems weird. My grandma would roll in her grave if she saw this!
Great recipe! I added a bit of nutmeg and a pinch of cayenne pepper for a twist. Everyone loved it!
Super easy to make! My kids loved it, even my picky eater! Thanks for sharing this recipe.
I didn’t realize you could mix sweet and savory like this. It’s different but kinda good. I’m confused though!
I don’t get why people put marshmallows on sweet potatoes. Too sweet for my taste. I prefer the savory recipes.
Yummm!!!
I wanna make this but I’m allergic to eggs. Can I leave them out? Any suggestions?
Absolutely loved this recipe! It was a hit at our Thanksgiving dinner. The marshmallows on top are a game changer!
I added a sprinkle of cinnamon, and it was fantastic! Made it for a potluck, and I had 0 leftovers.
Cinnamon?! That’s so smart! I never thought of that. I bet it adds a nice touch. Gonna try this next time!
Sounds good, but isn’t cinnamon a bit weird for a casserole? Like, isn’t that more for breakfast?
I thought this would be easier. Mine turned out all mushy. Not sure what went wrong.
Don’t worry! Mine turned out mushy too the first time. Maybe you overmixed the sweet potatoes? Just don’t give up! 🥰
Meh, I don’t get why people like sweet potatoes. Didn’t enjoy this!
Great recipe, but I didn’t have mini marshmallows so I used regular ones. Still turned out delish! 😋
Sweet potatoes never tasted so sweet! I’m not a big fan of sweet things, but this was good. Will make again!
Delicious! Easy to follow. My kids loved it! I’m surprised at how much they ate. Thanks for sharing.
This casserole is soooo good! I made it for Thanksgiving and everyone loved it! Will definitely make again!
I can’t believe how good it turned out! Definitely a keeper for the holiday season!
It’s just okay. My mom’s recipe is way better lol.
I don’t really understand why people put marshmallows in savory dishes. It’s strange. I think just plain sweet potatoes are better.
I get where you’re coming from! Marshmallows can be a bit odd in savory food. But trust me, they add a nice sweetness to the dish! It’s all about balance.
This recipe is a lie! It says sweet potatoes but tastes more like cake. What even is this?
So simple and delicious! My kids even ate it without complaining! Definitely making this again!
Sweet potato casserole my fav. ❤️❤️❤️
I just dont get why yall add sugar to sweet potatoes? They are sweet enough without it!
Too much sugar!!! My dentist is gonna hate me for this one! 😂
Haha, I know the feeling! But I think it’s worth it for that yummy taste! 😊
I added nuts to mine, it was great! Highly recommend trying that! Full bellies here.
I was skeptical about the mini marshmallows, but wow! They really elevate the dish. A hit at our family gathering!
I don’t know… sweet potatoes with marshmallows? Seems weird to me. I don’t think I’ll try it.
It was ok, but I think it needed more spices like cinnamon or nutmeg for flavor. Also, too sweet for my taste.
This was an easy recipe to follow. Took me a little longer than it said, but worth it. Yum!
Looks good, but how did yours turn out? I tried a similar recipe and it was too soggy. Maybe I did something wrong?
I’m so glad you enjoyed it! Sweet potato casserole is the best, especially with those marshmallows on top. It’s definitely a family favorite at Thanksgiving!
Yum! Love the marshmallows on top! So creamy and sweet!
I followed the recipe but I didn’t really like it. The sweet potatoes were too sweet for my taste. Maybe less sugar next time?
I followed the recipe but it turned out too soggy. I think less milk would help.
This casserole is so sweet and delicious! Perfect for Thanksgiving.
Yummm! So good!
Absolutely! This is one of my favorite dishes. The marshmallows just take it to another level!
I don’t know, sweet potatoes with marshmallows? That sounds kinda weird to me.
This casserole was amazing! The sweetness was perfect, and the marshmallows on top added a nice touch. Will definitely make again!
I agree! The marshmallows really make it special. It’s like a hug in a dish! 😊
I don’t know, I think it might be too sweet. I prefer more savory casseroles.