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Sweet Potato Casserole with Marshmallow Fluff

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I love this sweet potato casserole and make it every year! It’s topped withย homemade toasted marshmallow fluff, and the sweet potatoes are baked rather than boiled, making it an easy recipe.ย This holiday classic has been a family favorite for many years!

Sweet potato casserole with marshmallow fluff.


This dish is a staple at our Thanksgiving table! What I love about this recipe is that the sweet potatoes are baked rather than boiled. This eliminates having to peel, chop and boil them.

When sweet potatoes are baked, they become even sweeter! This also makes mashing so much easier. It’s just easier all around, and the flavor is perfect. Creamy sweet potatoes are a classic Thanksgiving side dish.

Growing up, we always topped ours with marshmallows, but I love nothing more than spreading fluffy, homemade marshmallow fluff over the top! Torch it with aย kitchen torch, and it not only looks gorgeous but tastes even better!

You can also use marshmallows; mini marshmallows or large ones work great. Add an even layer of marshmallows over the top of the sweet potatoes (once the casserole is done) and place in the oven for 5-10 minutes until the marshmallows are gooey and toasted!ย 

Overhead of sweet potato casserole with marshmallow fluff and a napkin that reads Thankful.

Ingredient Notes and Shopping List

Sweet Potatoes – You’ll need 5 large sweet potatoes for this recipe. We use whole sweet potatoes and pop them right in the oven!

Brown Sugar – This adds all of the sweetness to the sweet potatoes. You can use dark brown sugar or light brown sugar.

Butter – This adds so much flavor to the sweet potato mixture! Use good quality butter for the best flavor.

Heavy Cream – The cream gives the casserole a creamy texture.

Vanilla Extract – Add flavor and gives more depth to the dish. Use pure vanilla extract.

Salt – Enhances the flavors in the recipe.

Fluffy Marshmallows or Marshmallow Fluff – Either of these will work to add a delicious marshmallow topping over the sweet potatoes!

Toasted marshmallow on a sweet potato casserole recipe

How to Get Smooth Mashed Potatoes

If you don’t have a potato masher, use a fork to get them as smooth as possible. If you want them really smooth add them to a food processor.

We don’t like them too smooth though as the texture is nice for a casserole.

Boiled Potatoes vs. Baked Potatoes

There are two ways to get soft sweet potatoes. You can peel, chop, and then bring them to a boil in a large pot. Then, they’re drained and mashed. However, I find the easiest way is to bake them.

You don’t have to peel or chop and when baked they are even sweeter!

For this method, you simply poke holes in the potatoes, then place them on a baking sheet lined with tin foil and bake until super soft. Then slice opens the top and scoops out the inside of the sweet potato.

Sweet potato casserole in a baking dish.

Sweet Potato Casserole Toppings

Bourbon – You can even add in a splash of bourbon or any liquor to give the sweet potatoes an extra kick! Spices like cinnamon and nutmeg are also great in a sweet potato casserole. 

Nuts – Top the casserole with walnuts or pecans for a crunch or add a streusel topping over the top of the casserole.

Orange Juice and Orange Zest – Give the dish some citrus notes with orange juice. It will add so much yummy flavor to the dish! Just add a tablespoon of zest or juice to the recipe.

Cardamom – If you’re a fan of this fall spice, add a 1/2 teaspoon for an incredible flavor. We use it in our apple cider donuts and they are amazing!

Spread the homemade marshmallow fluff over the mashed sweet potatoes.

Kitchen torch making marshmallow topping toasty

Marshmallow Toppings

There are two ways you can add toasty marshmallows to this dish!

Marshmallow Fluff – Spread the homemade marshmallow fluff over the mashed sweet potatoes.  Using a kitchen torch, torch the marshmallow fluff until it’s toasty! 

Marshmallows – Place large marshmallows or mini marshmallows over the top of the mashed sweet potatoes before baking. They will become gooey marshmallows and taste so good in this classic sweet potato casserole.

Toasted marshmallow fluff on sweet potato casserole.
Are yams and sweet potatoes the same?

Sweet potatoes and yams are different. Yams have tougher skin and are starchier. They’re not as sweet as sweet potatoes. You can technically use sweet potatoes or yams in this sweet potato casserole recipe, but sweet potatoes are our favorite!

Sweet potatoes are a type of starchy, sweet-tasting potato. They have an orange color inside and can be eaten cooked or raw and are often used in sweet or savory dishes.

Can sweet potato casserole be made the night before?

Yes, this is a great make-ahead recipe! Prepare the casserole and store it in the refrigerator overnight. Add the marshmallows right before you’re ready to bake.

How long can you keep sweet potato casserole in the fridge?

Sweet potato casserole will stay good in the refrigerator for three to five days. This is with a marshmallow topping too. After five days we always discard the sweet potatoes.ย 

Sweet potato casserole with marshmallow fluff.

This sweet potato casserole is the perfect holiday side dish! It’s easy to make, can be made ahead of time, and is always a huge hit! It’s sweet, creamy, fluffy, and has the perfect amount of crunch.

This dish has always been a favorite, and I know it will be one of your favorites, too! Give this sweet potato casserole recipe a try, and let us know what you think! Leave a comment and review below!

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Sweet Potato Casserole Recipe

An easy recipe for sweet potato casserole with baked sweet potatoes and whipped marshmallow fluff!
4.36 from 14 votes
Print Pin Rate
Course: Side Dish
Cuisine: American
Prep Time: 10 minutes
Cook Time: 1 hour
10 minutes
Total Time: 1 hour 20 minutes
Servings: 8 people
Calories: 328kcal
Author: Eden

Ingredients

Sweet Potato Casserole

  • 5 large sweet potatoes , washed and pat dry
  • 1/2 cup brown sugar
  • 1/4 cup unsalted butter
  • 1/2 tsp salt
  • 2 tbsp heavy cream
  • 1 tsp vanilla extract
  • 10 large marshmallows

Instructions

  • Preheat the oven to 425-degrees Fahrenheit
  • Rinse and pat dry the potatoes.
  • Line a baking sheet with foil and place the potatoes on the foil to bake.
  • Bake until tender for about 1 hour. You want them to be extra soft.ย 
  • Cut them open and scoop out the sweet potato and place in a bowl, leaving the skin behind.ย 
  • Mash the sweet potatoes with butter, sugar, salt, vanilla, and heavy cream while theyโ€™re hot.ย 
  • Mash until the texture is smooth or how you like it. You can also use an electric mixer or blender to get smooth potatoes.
  • Spread the mashed sweet potatoes into a casserole dish.
  • Top with regular or large marshmallows, OR spread the homemade marshmallow fluff over the mashed sweet potatoes.ย 
  • If you're using marshmallows, bake the dish in a 350-degree oven for 5 mins or until the marshmallows are golden brown.
  • Using a kitchen torch, torch the marshmallow fluff until itโ€™s toasty!ย 

Notes

You can also use marshmallows for this recipe. Add an even layer of marshmallows over the top of the sweet potatoes (once the casserole is done) and place in a 350-degree oven for 5 minutes until the marshmallows are gooey and toasted!
This would replace the marshmallow fluff but is still be just as delicious!ย 
If you make this the day before, leave the marshmallows off until you warm it up in the oven the next day.ย Wrap the casserole in plastic wrap and store it in the refrigerator for up to two days. When you’re ready to bake, remove the wrap and add the marshmallows. Bake as the recipe calls. You can also make the marshmallow fluff ahead of time!
When using marshmallow fluff, you’ll add it after the casserole is baking. Then, for that perfect toasty finish, use a kitchen torch to brown the marshmallows!
If you have any leftovers, store them in an airtight container for two days and reheat them in the microwave or oven.
If you want to keep them longer, sweet potato casserole can be frozen for up to two months. Thaw overnight in the refrigerator and then reheat.

Nutrition

Calories: 328kcal | Carbohydrates: 64g | Protein: 4g | Fat: 7g | Saturated Fat: 5g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 2g | Trans Fat: 0.2g | Cholesterol: 19mg | Sodium: 275mg | Potassium: 741mg | Fiber: 6g | Sugar: 27g | Vitamin A: 30380IU | Vitamin C: 5mg | Calcium: 80mg | Iron: 1mg
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6 thoughts on “Sweet Potato Casserole with Marshmallow Fluff”

  1. 5 stars
    This recipe is really amazing! Perfect for any occasion! Thanks a bunch for this very tasty sweet potato casserole recipe! Will surely have this again! Highly recommended!

    Reply
  2. 5 stars
    Oh. My. Gosh! This is gorgeous! The result looks so powerful. Iโ€™m a fan of the marshmallow topping but Iโ€™ve never even thought of the combination of sweet potatoes with marshmallows. I believe the taste of this sweet potato casserole is just phenomenal. Iโ€™m so inspired. Thank you SO MUCH for sharing this brilliant idea and all of your useful recommendations. Such treasure. This made my day. Iโ€™m so lucky to have discovered your wonderful blog. Gonna browse it to explore more amazing recipes.

    Best wishes,
    Ann

    Reply
4.36 from 14 votes (10 ratings without comment)

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