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Creamy mashed sweet potatoes are flavored with brown sugar and fall spices, then covered in a gooey marshmallow topping! This classic Sweet Potato Casserole recipe is a delicious Thanksgiving side dish that feels like a fancy dessert.
If you’re looking for more traditional Thanksgiving recipes, I highly recommend trying this easy green bean casserole too!
Table of Contents
- Easy Sweet Potato Casserole With Marshmallows
- Why You’ll Love This Sweet Potato Casserole Recipe
- What You’ll Need
- How to Make the Best Sweet Potato Casserole
- Tips for Success
- Can I Make This in Advance?
- Serving Suggestions
- How to Store & Reheat Leftovers
- Can I Freeze This Sweet Potato Casserole Recipe?
- More Thanksgiving Sides
- Get the Recipe
Easy Sweet Potato Casserole With Marshmallows
Is it really Thanksgiving without a big serving dish full of marshmallow-topped sweet potatoes? Not to me! I spent years experimenting with this recipe until it was absolutely perfect. The sweet potato part isn’t too runny, the flavors are to die for, and the overall level of sweetness is just right.
This festive casserole comes together in less than 30 minutes, and you can even make it in advance so you can focus on your main dish and other sides on Thanksgiving day. Some sweet potato casseroles contain pecans, but I prefer to leave them out and let the potatoes and marshmallows speak for themselves. However, if you’re craving that nutty, crunchy element in your casserole, you can totally add some candied pecans underneath or on top of the marshmallows!
Why You’ll Love This Sweet Potato Casserole Recipe
In my house, sweet potato casserole with marshmallows is a must at Thanksgiving! Here’s why I think your family will love this decadent side dish as well:
- Rich and creamy. Silky mashed sweet potatoes topped with gooey, toasted marshmallows is the dreamiest combination. Every bite is heavenly!
- Filled with fall flavors. Infused with earthy cinnamon and warm, cozy nutmeg, this casserole is the perfect fall side dish. It’s great at Thanksgiving, but really you can make it anytime you need a hearty dinner on a chilly day!
- Quick and easy. This recipe can be prepped with 8 ingredients in just 25 minutes.
- Kid-friendly. I mean, marshmallows for dinner? This casserole is guaranteed to put a smile on your kiddo’s face!
What You’ll Need
Let’s go over the short list of ingredients you’ll need to make this iconic side dish. Once you gather them up, you’re practically halfway done with the recipe! (For exact amounts and the full set of directions, check out the recipe card below.)
- Canned Sweet Potatoes: Drain them very well before you begin so that the casserole doesn’t come out too runny.
- Brown Sugar: Both light brown sugar and dark brown sugar will work, use whichever kind you like!
- Salted Butter: If you don’t have salted butter, just use unsalted and a pinch of extra salt.
- Egg: To bind all the ingredients together and give the mixture a fluffy consistency.
- Spices: Cinnamon and nutmeg are must-have fall spices for this recipe!
- Vanilla: This enhances the other flavors in the dish. Pure vanilla extract is my go-to!
- Marshmallows: Mini marshmallows work best because they’ll melt evenly over the top of your casserole.
Are Canned Yams and Sweet Potatoes the Same Thing?
In the United States, the word “yam” is often used to describe certain kinds of sweet potatoes. So if you’re only seeing canned yams at the grocery store, don’t worry about it! They are simply softer sweet potatoes with a darker skin, which taste just as yummy in this casserole. Actual yams come from Africa, and they’re rarely found in American supermarkets.
How to Make the Best Sweet Potato Casserole
Putting together this sweet potato casserole recipe is a walk in the park. It only takes about 5 minutes of prep time!
- Heat the oven. Preheat the oven to 350°F.
- Mash the potatoes. Mash the drained sweet potatoes in a large bowl. I used a fork, but if you have a potato masher you can use that instead.
- Combine with the other ingredients. Add the brown sugar, butter, egg, cinnamon, nutmeg, and vanilla to the mashed sweet potatoes, then mix everything well.
- Bake the casserole. Transfer the sweet potato mixture to an 8×8-inch casserole dish and spread it out evenly. Bake the potatoes in the preheated oven for 18-20 minutes.
- Add the marshmallows. Place the marshmallows on top of the casserole, covering the sweet potato mixture completely.
- Bake the casserole again. Bake your casserole until the marshmallows are melted and browned on top.
- Enjoy! Serve your sweet potato casserole warm!
Tips for Success
All the time I spent fine-tuning this recipe left me with a few important takeaways. Here are my tips and tricks for making the best sweet potato casserole!
- Drain the sweet potatoes thoroughly. If you don’t drain out all the excess moisture from your sweet potatoes, your casserole could come out runny. Take your time with this step to keep that from happening.
- Canned potatoes vs fresh potatoes. If you’d like to substitute the canned sweet potatoes for fresh ones, you’ll have to boil them first. Cut 3 large sweet potatoes into cubes and place them in a pot of boiling water. Once it returns to a boil, turn down the burner to low heat. Cook the potatoes for about 15 minutes, or until they’re nice and tender. Finally, drain them well and continue with the recipe.
- Cover the potatoes completely with the marshmallows. You want the marshmallows to form a sort of seal over the sweet potatoes so that no air pockets are present. If there is space between the marshmallows, your topping will have gaps in it. Using mini marshmallows is a great way to ensure that the sweet potatoes are completely covered.
Can I Make This in Advance?
Sure you can. This sweet potato casserole recipe can be prepared a day or two ahead of time and kept well-covered in the fridge. Just hold off on storing it until it has cooled completely. To reheat your casserole, warm it in a 350°F oven until it’s heated throughout. Add the marshmallows shortly before it’s done so that they melt but don’t burn!
Serving Suggestions
Want to introduce some new dishes to your Thanksgiving feast? The following recipes go great with this casserole.
- Serve with roasted veggies. These honey roasted Brussels sprouts are an unexpected way to get picky kids excited about eating vegetables. The recipe features butternut squash and cranberries to keep everything festive for Thanksgiving.
- Pair with a savory casserole. Casseroles are the kind of comfort food that everyone deserves to enjoy at a holiday dinner. Serve this sweet potato bake with an equally delicious savory casserole like my classic green bean casserole (linked above)!
- Serve with stuffing. Whenever my family is making plans for our Thanksgiving dinner, I get asked if my classic homemade stuffing will make an appearance at the table. And nobody ever takes no for an answer!
- Pair with garlic mashed potatoes. It never hurts to have multiple options available when it comes to potatoes. These chunky garlic mashed potatoes are a great dish to serve beside this sweet potato casserole!
How to Store & Reheat Leftovers
If you end up with extra sweet potato casserole, save the leftovers for later! Here’s the best way to do that:
- To store. Once cooled, leftover casserole should be kept in an airtight container in the fridge. Enjoy it within 4 days.
- To reheat. You can reheat individual portions in the microwave for no more than 30 seconds at a time. Larger amounts can be warmed up in the oven as directed in the make-ahead instructions.
Can I Freeze This Sweet Potato Casserole Recipe?
Yes, you can freeze this casserole if you leave off the topping. Bake it, let it cool, then cover the baking dish tightly in two layers of plastic wrap or aluminum foil and freeze it. Alternatively, you can transfer it to a freezer-safe container.
Thaw out your casserole in the fridge before adding the topping. I recommend reheating the potatoes before you add the marshmallows and cook. Otherwise, you will either have a cold casserole or your marshmallows will over-brown.
More Thanksgiving Sides
This fall holiday is all about the food. And I have even more recipe recommendations for you!
- Easy 4 Ingredient Cranberry Sauce
- Cheesy Hash Brown Casserole
- Carrot Souffle
- Creamy Cornbread Casserole
- Roasted Sweet Potatoes
Sweet Potato Casserole with Marshmallows
- Prep Time: 5 minutes
- Cook Time: 20 minutes
- Total Time: 25 minutes
- Yield: 6
- Category: Side Dish
- Method: Oven
- Cuisine: American
Description
Creamy mashed sweet potatoes are topped with gooey, toasted marshmallows to create a classic Thanksgiving side dish that the whole family will love!
Ingredients
- 1 29-oz can sweet potatoes, drained
- 2/3 cup brown sugar
- 2 tbsp salted butter, melted
- 1 egg
- 1/4 tsp cinnamon
- 1/4 tsp nutmeg
- 1 tsp vanilla
- About 3 cups mini marshmallows
Instructions
- Mash sweet potatoes from the can in a large bowl. I used a fork, but if you have a potato masher you could use that.
- Add brown sugar, butter, egg, cinnamon, nutmeg and vanilla. Mix well.
- Put sweet potato mixture into an 8×8 casserole dish.
- Bake at 350°F for 18-20 minutes.
- Add marshmallows to the top of the casserole and bake in the oven until melted and browned on top.
Notes
- To store. Once cooled, leftover casserole should be kept in an airtight container in the fridge. Enjoy it within 4 days.
- To reheat. You can reheat individual portions in the microwave for no more than 30 seconds at a time. Larger amounts can be heated up in the oven at 350F until warmed through.
- To freeze. You can freeze this casserole if you leave off the topping. Bake it, let it cool, then cover the baking dish tightly in two layers of plastic wrap or aluminum foil and freeze it. Alternatively, you can transfer it to a freezer-safe container.
Nutrition
- Serving Size: 1 Serving
- Calories: 273
- Sugar: 34.7 g
- Sodium: 128.9 mg
- Fat: 4.9 g
- Carbohydrates: 55.7 g
- Protein: 3.2 g
- Cholesterol: 41.2 mg
This recipe was AMAZING! We’ve never made sweet potato anything for Thanksgiving and I wanted to try it. Huge hit with the family.
Delicious recipe. Whole family enjoyed it.
So glad to hear that!
Do you use small marshmallows?
Yes, mini marshmallows
Hi! Can I double this recipe and put it in a 9 x 13“ dish? Thank you!
Yes, definitely.
I added chopped pecans but otherwise made the recipe as is and everyone loved it.
hi! if making in a 9×13 dish would you double the recipe? thanks!
Yes, I would.
Would you double the cooking time to 36-40 minutes, as well? I’ll be using a disposable 9×13.
I’m not entirely sure if you’d need to double it, but you would definitely cook it longer. I’d say 30-40.
I plan on making this to bring to family for Thanksgiving. If I prepare the night before do I bake it the night before and store in fridge and then reheat? Or do I bake it on the day it is being served. We have a 4 hour drive. Thanks
I usually prep the night before and bake the next day. If you bake it from cold though, it may take a little longer to bake.
We made and reviewed this recipe via live stream on twitch last night. Absolutely beat our expectations for an easy side and honestly its better than pumpkin pie the next when its cold. We did add 1/4tsp cloves for an extra little pop but this is a winner!
Definitely going to make this recipe? How would I alter the cooking time in one of those disposable tin foil pans? We travel to families house for Thanksgiving and I try to bring disposable stuff so that way I don’t have to tote it home with me.
If anything, you may need to reduce it a bit but it should be fine. I use those disposable ones at home all the time to help with less clean up.
I only have the 40 oz can of sweet potatoes.. can you let me know the measurements? I’m so terrible with fractions lol
Well, you could use 3/4 of the can and then follow the recipe as written. Or you could use the whole can and add about another fourth of the rest of the ingredients to it.
Do you happen to know if this can be prepared the night before and left in the fridge or will it get weird?
That is totally fine. We actually just did that tonight. Just bring the casserole to room temperature prior to baking or add a little bit more bake time to account for it being colder when you put it in the oven from the fridge.
The sweet potato cans are already seasoned that I bought, should I use these?
I’m not sure what kind of seasoning they have so it’s hard to say.
They are already seasoned in brown sugar and butter.
Then I would adjust/reduce those things in the recipe to your liking.
Can you add pecans or walnuts ?
That should be fine.
Great recipe! I made this for thanksgiving and for Christmas too.. everyone loves it! I doubled the recipe and just doubled the time.
Thank you!!
I’m so glad to hear you enjoyed it!
Would this work to go ahead and have it all mixed and in the pan today but not bake it until in the morning?
Yes, that’s exactly what I’m doing. You’ll just either want to bring it to room temperature before baking it or expect it to need a little longer to bake. Happy Thanksgiving!
Hi, Excited to try this recipe. Do you think I could make it in a slow cooker? Any idea how? High/low and how long? I am NOT good at cooking, and it doesn’t matter how easy a recipe is, I CAN mess it up! Thank you!
I’m really not sure. I’ve never tried it. I imagine it would be fine, I just wouldn’t know what settings to use.
Hi. Should I get the regular canned or the candied one ?
I have always used these.
If I increase this recipe times 5 for 30 people, what baking time do you suggest?
It’s really hard for me to say. Increasing it that much, you will clearly need to use multiple pans. Baking time is going to very much depend on the size of the pan and how much of the casserole you have in there. I would cook it until it’s at least between 150 and 160 degrees, the temperature that eggs should be cooked to.
do i have to use an egg?
The egg helps to thicken up the mixture and hold it together a little better. You can leave it out, but it does change the texture of the potatoes a little bit.
I added more sweet potatoes but kept everything the same. Will I need to cook it longer?
Most likely you will need to bake it a little bit longer.
why the egg?
Egg is a binder and does that in this casserole. It basically kind of thickens it a bit when it bakes.
If I have a 9×13 pan how do I make it? 3 or 4 cans of sweet potatoes?
It depends on how many you want it to serve. You could just double it for about 12 servings, or do more.
Do you strain the can of sweet potatoes ??
Yes, you do.
My daughter made this for a “Friendsgiving” get together. We didn’t have a lot of time so we looked for a recipe using canned sweet potatoes. It was a BIG hit. Delicious! Just the right amount of nutmeg and cinnamon. 5 stars!
Perfect! I’m so glad you enjoyed it! Thanks Lori!
Can I make this in a 13 by 9 pan? How long did it bake for then?
[…] Sweet Potato Casserole w/ Marshmallows by Life, Love & Sugar […]
Hi, love to make this but can’t get canned sweet potatoes in the uk. How many uncooked sweet potatoes would I need, and do I just bake them first? With anticipation!!!
Hi Samantha! I’ve never used regular sweet potatoes for this recipe, so it’s hard to say. I googled for you and the answer I found is 3 large sweet potatoes. I’m not sure how accurate it is, but you could try it. And yes, you’d want to bake them until tender first.
Hi! I haven’t tried yet because I would like to know what brand you use for the canned sweet potatoes??
Bruce’s.
Looks so yummy!! Sweet potato casserole is delicious…but I think green bean casserole has to be my all time favorite Thanksgiving food group lol, with LOTS of extra french fried onions. I like to add a little bit of sugar as well to add a sweet note to it as well 🙂
Green Bean Casserole is another requirement of mine. I usually add a little worchestire sauce and hot sauce though to give it a little kick. I’ve never thought to add sugar and make it sweet before. What a great idea!
I add worcestershire sauce to mine too!! The hot sauce sounds good! I love spicy things almost as much as I love sweet things!