Traditional Sweet Potato Casserole with Pecans and Marshmallows is a Thanksgiving tradition and family favorite. Whether for a special occasion or just Sunday supper, it’s the perfect side dish for any meal.

Why you’ll love this Sweet Potato Casserole with Marshmallows and Pecans
Of all the sweet potato recipes on the site, this one has got to be my favorite- and it’s perfect for Thanksgiving Day.
- Great for a holiday meal – You can’t plan your Thanksgiving menu without including sweet potato casserole, right?
- Classic flavors – When you think of fall, winter and the holiday season, this casserole encompasses them all!
- Easy to make – Follow the simple steps below for making the best sweet potato casserole you’ve ever had!

Recipe Essentials
You might have a lot of these simple ingredients already on hand! A full list of ingredients with measurements for this recipe is available in the printable recipe card below.
- Large sweet potatoes – I like using fresh sweet potatoes rather than frozen or canned. They taste so much better
- Butter
- Eggs
- Evaporated milk
- Sugar
- Cinnamon
- Salt
- Light brown sugar
- Cornflakes cereal
- Pecans
- Mini marshmallows

How to Make a Sweet Potato Souffle (Step-by-Step)
You can have this whole casserole on the holiday table in just oven an hour!
- Prepare sweet potatoes. Preheat your oven and bake the sweet potatoes until easily pierced with a fork. Remove and allow to cool until able to handle. Cold sweet potatoes will take longer to bake, so don’t allow to cool fully. You can also make sweet potatoes in the microwave.
- Scoop sweet potatoes. Cut sweet potatoes in half, scoop out sweet potato mixture and add to a large mixing bowl or the bowl of an electric mixer fitted with a paddle attachment. You could also use a large bowl with a potato masher or hand mixer.
- Prepare oven and baking dish. Raise the temperature of the oven and coat your casserole dish with cooking spray.
- Combine rest of ingredients. Add butter, mix well. Add eggs, one at a time, mixing well between each. Add milk, sugar, cinnamon and salt. Place potato mixture into prepared baking dish and bake.
- Pecan topping. Meanwhile, prepare pecan topping. Cream together butter and sugar. Add pecans.
- Marshmallow topping. Top sweet potatoes with marshmallows, return to oven until marshmallows start to melt. Remove from oven.
- Add pecan topping. Top marshmallow layer with creamed butter, sugar and pecans by using two forks and evenly placing over marshmallows. Return to oven.
- Top with corn flakes. Finish by topping this classic sweet potato casserole recipe with corn flakes, gently pushing them into the mixture. Allow to rest before serving.

Variations
While we like this easy recipe exactly as written, there are plenty of ways you can make this classic Thanksgiving side dish your own.
- Toppings – There are a number of options for toppings. A pecan streusel, gooey marshmallows, crunchy pecans, brown sugar streusel or any combination of the three would be the perfect addition.
- Sweet potatoes – You could use different root vegetables, canned sweet potatoes or even cooked whole sweet potatoes to make this classic side dish.
- Flavor – Add a splash of maple syrup, vanilla extract, fresh orange juice or even a little bourbon to take the flavor up a notch.

Sweet Potato Souffle vs Casserole
Really the difference between most sweet potato casseroles and sweet potato souffle is negligible with the exception of the name. Use whichever you prefer.
Both are light, fluffy and topped with crunchies and something sweet. In this case it is corn flakes cereal, pecans, marshmallows and a generous helping of butter.
Sweet Potatoes vs. Yams
Lastly, let’s talk about the difference between sweet potatoes and yams. A sweet potato is not a yam. Epicurious summed it up beautifully:
They’re two different plants. The sweet potato is in the morning glory family, while yams are related to palms and grasses.
And they grow in different parts of the world: yams in Africa, where they originated, and also Southeast Asia, the Caribbean and Central America. Sweet potatoes in the United States, with North Carolina leading the way in production.
So at a typical supermarket, what you’re buying is an American-grown sweet potato. True yams are imported and a rare find outside of ethnic grocery stores.
Needless to say, we need sweet potatoes for this creamy sweet potato casserole.

Sweet Potato Souffle with Marshmallows
Whichever method you prefer works perfectly. I personally like to bake them.
Technically the yams you see in a can at American grocery stores are actually sweet potatoes.
Sweet potatoes generally bake faster than regular potatoes due to their lower starch content and higher sugar content. The natural sugars in sweet potatoes caramelize more quickly, resulting in a faster cooking time compared to regular potatoes.
To substitute canned sweet potatoes for fresh in a recipe, drain and rinse the canned sweet potatoes, then use them in the same quantity as the fresh ones called for in your recipe. Keep in mind that canned sweet potatoes are already cooked, so they may have a softer texture and slightly sweeter flavor compared to fresh ones.
I feel that peeling them before boiling is easier than handling and peeling while hot. Skins are edible and contain nutrients, so if there are small pieces, that is fine.
Eggs serve several purposes. The first is that a binder., it improves texture and also adds a rich flavor.
More Easy Thanksgiving Recipes
If you’re like me, you could eat Thanksgiving food all year round. Here are some of my favorites.
Sweet Potato Souffle Recipe
Ingredients
Sweet Potatoes:
- 3 pounds sweet potatoes
- 6 tablespoons unsalted butter
- 2 eggs
- 2/3 cup evaporated milk
- 2/3 cup sugar
- 1 teaspoon cinnamon
- 1 teaspoon fine sea salt
Pecan Topping:
- 1/2 cup unsalted butter
- 1/2 cup light brown sugar
- 2 cups corn flakes
- 1 cup pecans , roughly chopped
- 1 1/2 cups mini marshmallows
Instructions
- Preheat oven to 375 degrees. Bake sweet potatoes for 45-60 minutes, or until easily pierced with a fork. Remove and allow to cool until able to handle.
- Cut sweet potatoes in half, scoop out potato flesh and add to a large mixing bowl or the bowl of a stand mixer fitted with a paddle attachment.
- Preheat oven to 400 degrees. Coat a 9×13 baking dish with cooking spray.
- Add butter, mix well. Add eggs, one at a time, mixing well between each. Add milk, sugar, cinnamon and salt. Bake 15 – 20 minutes @400 degrees.
- Place potato mixture into prepared 9×13 baking dish. Bake for 20 minutes. Remove.
- Meanwhile, prepare pecan topping. Cream together butter and sugar. Add pecans.
- Top sweet potatoes with marshmallows, return to oven for 5 minutes or until marshmallows start to melt. Remove.
- Top marshmallow layer with creamed butter, sugar and pecans by using two forks and evenly placing over marshmallows.Finish by topping with Corn Flakes, gently pushing them into the mixture. Return to oven for 10-15 minutes, or until the top is lightly browned.
- Remove and allow to rest for 10-15 minutes before serving.
Video
Notes
Nutrition
























How much light brown sugar for topping??? 1 cup? 1/2 cup!
Hey Barbara- this recipe has been up for YEARS and no one ever said anything. Thank you so much for pointing that out. I actually made it for my own holiday and added some more spices. I’m going to update the whole post to read better. It’s a 1/2 cup. 🙂
Great variation from traditional sweet potato casserole! I love the corn flakes!
This sweet potato casserole is decadent, cozy, and delicious! Fresh sweet potatoes make such a difference.
Speaking of; a friend of mine works for NC Sweet Potatoes, and she is on a mission to educate people about the differences between sweet potatoes and true yams. It’s amazing how many varieties of sweet potatoes are grown just in the US!
I love pecans in my sweet potato casserole. This version looks amazing and I really like the cornflakes on top.
Would love to try this! Do you have any suggestions as to what we can substitute the pecans with? I have a little one who is allergic. Thank you!
Such a great sweet potato casserole recipe! Making this every single week from here on out!
This looks so good! I can’t say that I’ve ever seen sweet potato casserole with corn flakes before. I can’t wait to make this.
Can you believe that I have never tried sweet potato casserole before?? I am so excited to make this tonight, thank you so much for the recipe 🙂
I have everything in the house to make this and going to try it tonight and I cant wait it looks scrumptious! thanks
This recipe is outstanding. The topping is something I could eat with a spoon all by itself!!