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Sweet Potato Casserole with Marshmallows is to die for! Mashed sweet potatoes are mixed with brown sugar, butter, topped with mini marshmallows and baked until perfectly brown and gooey on top.

sweet potato casserole slice on a stack of plates.

We have been in Thanksgiving planning mode a lot around here lately. Juicy turkey, mashed potatoes, rolls, pie, and the infamous sweet potato casserole. Not gonna lie, this is so good it should be considered dessert, but somehow we still get away with calling this a ‘vegetable side dish’ year after year. 

Sweet potato casserole has a lot of variations out there, and this one is always a favorite. Is there really a wrong way to eat sweet potatoes, brown sugar, butter, and marshmallows though? We think not. Can we all agree not to tell the kids that sweet potatoes are healthy? We’d like to get away with this for a few more years before they realize there is actual nutrition in this dish. If you’re looking for another delicious option, you can always make the variety of Sweet Potato Casserole with Pecan Topping.

  • What’s the difference between yams and sweet potatoes? 

    In the United States, the terms “Sweet Potato” and “Yam” are used interchangeably and refer to that potato looking thing with the red skin and orange flesh. Yet, you have probably seen something else in the grocery store labeled sweet potato with light yellow skin, while your orange flesh variety is labeled yams. Guess what? Both of them are sweet potatoes! The kind of sweet potatoes you think of as yams are simply dark-skinned sweet potatoes. You won’t commonly come across true yams in an American grocery store. True yams have brown or black skin and the flesh is either red, purple, or off white. 

    We prefer garnet sweet potatoes in our casserole, both for the flavor and the color! However, you can use either an orange or white flesh sweet potato.

  • Mini or Large Marshmallows in Sweet Potato Casserole:

    Large marshmallows are just a bit too big for a sweet potato casserole and are difficult to eat and can also burn. We love the ratio of gooey center to crispy outside on the mini marshmallows, and recommend you stick to the mini variety. If you’ve only got large marshmallows and you are in a pinch, use clean kitchen scissors to snip them into smaller pieces for topping. Spraying the scissors with nonstick cooking spray will help with any sticking issues. 

  • Can I use canned sweet potatoes/yams?

    This recipe is written for raw sweet potatoes and we do highly recommend using them for the best flavor. If all you’ve got is canned, we can work with that! Simply skip the second step of the recipe where you boil your sweet potatoes. Instead, drain your canned yams thoroughly and proceed with mixing them in with the other ingredients and placing them into your casserole dish. You’ll need 1 1/2 to 2 pounds total, but you can always scale the recipe smaller if you need to. 

  • Storage and Reheating Instructions:

    Store any leftovers in the fridge for up to 4 days, and simply reheat in the microwave in 30-second increments until warmed through. If you want to reheat a large portion at one time, you can slip the entire casserole dish back into a preheated oven at 350 degrees Fahrenheit until warmed through.

a baking dish filled with sweet potato casserole.

Watch the video below where Rachel will walk you through every step of this recipe. Sometimes it helps to have a visual, and we’ve always got you covered with our cooking show. You can find the complete collection of recipes on YouTube, Facebook Watch, or our Facebook Page, or right here on our website with their corresponding recipes.

sweet potato casserole.
Sweet Potato Casserole with Marshmallows is to die for! Mashed sweet potatoes are mixed with brown sugar, butter, topped with mini marshmallows and baked until perfectly brown and gooey on top.
Prep Time 30 minutes
Cook Time 30 minutes
Total Time 1 hour
  • 4 large sweet potatoes (1 1/2 to 2 pounds) , peeled and cubed
  • 1/2 cup brown sugar
  • 2 large eggs
  • 1/2 teaspoon salt
  • 4 tablespoons butter , softened
  • 1/2 cup milk
  • 1/2 teaspoon vanilla extract
  • 10 ounces miniature marshmallows
  • Preheat oven to 350 degrees. Lightly grease a 9x13 pan or 3 quart casserole dish.
  • Fill a large pot with water. Bring to a boil. Add cubed sweet potatoes. Return to a boil and reduce heat to low. Simmer sweet potatoes until tender (15-20 minutes). Drain.
  • Meanwhile, in a large bowl, mix together sugar, eggs, salt, butter, milk and vanilla. Add in cooked sweet potatoes and use a hand mixer to mix until smooth.
  • Transfer to prepared baking dish and smooth it out into an even layer. Top with miniature marshmallows.
  • Bake in the preheated oven for 25-30 minutes until marshmallows are toasted and golden brown.

Make-Ahead Instructions:

Prepare the recipe as directed and spread the sweet potatoes into a 9x13 pan. At this point, cover the dish with plastic wrap and refrigerate until ready to bake. When ready to bake, top with marshmallows and bake as directed.


Calories: 389kcal | Carbohydrates: 77g | Protein: 5g | Fat: 8g | Saturated Fat: 4g | Cholesterol: 63mg | Sodium: 345mg | Potassium: 629mg | Fiber: 5g | Sugar: 42g | Vitamin A: 24385IU | Vitamin C: 4mg | Calcium: 88mg | Iron: 1mg
Course: Side Dish
Cuisine: American
Keyword: Sweet Potato Casserole
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December 6, 2020 3:03 pm

5 stars
Very tasty and easy to make.

December 23, 2020 7:40 pm

5 stars
Absolutely mouth watering delicious. Will do it again and again. Thanks.

Becky Mast
December 22, 2020 10:46 am

5 stars
Very delicious and Easy to make!

anne & kids
November 25, 2020 4:56 pm

we are going to try this for our stay-at-home Thanksgiving dinner! thanks!

Christine Piccininni
November 25, 2020 2:42 pm

5 stars
This recipe is PERFECT! I prepared the sweet potatoes and the crumble and plan on baking it tomorrow. The taste of both are amazing! This recipe is now one of my favorite recipes for the holidays!

November 23, 2020 10:16 pm

5 stars
Looks delicious and conveniently easy! Love watching her cooking videos!

November 21, 2020 5:54 pm

5 stars
Since finding you several years ago I’ve had such fun reading your recipes and trying them.
I’m not much of a foul AKA bird eater so sides are my favorite, sweet potatoes are on the top of my list.
I do really like your recipe but I found if I add 1/4 of a cup of fresh squeezed orange juice it adds what’s that flavor to the mix .

November 11, 2020 12:46 pm

5 stars

Sharon Smith
November 10, 2020 3:24 am

I love this recipe and it’s amazing love your recipe so easy to do thank you for showing use them i give it a 5 rating.

November 9, 2020 5:02 pm

We always added a can of crushed pineapple and golden raisins to ours plus the mini marshmallows. Loved this growing up. Still do. Yours looks wonderful.

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