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    Home » Sides » Sweet Potato Casserole with Marshmallows

    Sweet Potato Casserole with Marshmallows

    Published: Nov 10, 2021 · Modified: Dec 17, 2021 by Kate · This post may contain affiliate links.

    Jump to Recipe Print Recipe

    Sweet potato casserole with marshmallows is a popular Thanksgiving side dish that combines creamy mashed potatoes with toasted marshmallows for an easy but delightfully delicious dish!

    A spoon scooping out sweet potato casserole.

    Sweet potato casserole is a popular Thanksgiving side dish for a reason! It's sweet with just a hit of spice, and the toasted marshmallows give the casserole a welcome bit of texture and crunch.

    This easy sweet potato casserole recipe may just be the best sweet potato casserole recipe. It's made with just a few simple ingredients, and most of the time spent making the casserole is just baking time (roasting the sweet potatoes and heating the casserole through). There's very little hands-on time, which is great on busy holidays.

    I've also included directions for making the casserole ahead of time. You can check that out below!

    Ingredients for sweet potato casserole in dishes.

    Ingredients and substitutions

    • Sweet potatoes - Most of the yams sold in the U.S. are actually sweet potatoes. Feel free to use "yams" if you can't find sweet potatoes.
    • Brown sugar - Light or dark brown sugar will work. Whether or not you should pack the brown sugar depends on your desired sweetness. Pack the brown sugar for a sweet casserole.
    • Butter - I like to use salted butter. Feel free to use unsalted butter if you prefer.
    • Milk - Any milk from skim to whole milk will work. Whole milk will give you a creamier casserole.
    • Eggs
    • Vanilla extract
    • Salt
    • Ground cinnamon - Pumpkin pie spice also work well.
    • Mini marshmallows

    How to make sweet potato casserole with marshmallows

    A fork poking holes in a sweet potato.

    Preheat oven to 400°F. Line a sheet pan with foil.

    Pierce the potatoes all over with a fork.
    Bake for 30-50 minutes, depending, on the size of your sweet potatoes, or until the potatoes fork tender. You can tell if they're fork tender because the fork will easily go through the potatoes.

    Carefully cut the potatoes in half, and allow them to cool. Decrease the oven temperature to 350°F.

    Brown sugar melted butter and eggs mixed together in a glass bowl.

    In a medium bowl, whisk together the sugar, butter, milk, eggs, vanilla, salt, and cinnamon.

    Mashed sweet potato in a glass mixing bowl.

    Scoop the flesh of the potatoes, and add it into the bowl. Mash everything together, and give it a good stir.

    Wooden spoon spreading mashed sweet potato in a casserole dish.

    Spread the mixture into a medium casserole dish (2 quart baking dish). Bake for 25-30 minutes until heated though.

    Unbaked mini marshmallows on top of sweet potato casserole.

    Sprinkle the mini marshmallows over the sweet potato filling and return to the oven to bake for an additional 10 minutes, or until the marshmallows are golden brown.

    Baked sweet potato casserole topped with toasted marshmallows.

    Can I make this ahead of time?

    You can! After you spread the sweet potato mixture in the casserole pan in step 9, cover it with plastic wrap and chill.

    The casserole can be stored in the fridge for 1-2 days before baking. When you're ready to bake it, uncover it and continue cooking it as the directions state.

    Just be careful if you're using a glass pan. You never want to put cold glass into a hot oven as it can shatter.

    Dish of sweet potato casserole next to a plate of sweet potato casserole.

    Will yams work in this recipe?

    In the U.S., nearly everything that is labeled as a yam is actually a sweet potato.

    Can I use canned sweet potatoes or yams?

    While you can use the canned sweet potatoes or yams, I highly recommend using fresh sweet potatoes. It takes a little more time because you have to roast them, but it is work the extra effort as roasting the sweet potatoes helps to concentrate the flavor.

    If you want to use the canned version, just skip the first three steps and continue with the drained sweet potatoes.

    A silver spoon on a plate of sweet potato casserole.

    More sweet potato recipes!

    • Sweet Potato Pie Bread
    • Baked Sweet Potato Donuts
    • Candied Sweet Potatoes

    If you’ve tried this sweet potato casserole recipe with marshmallows, don’t forget to rate the recipe and leave me a comment below. I love to hear from people who've made my recipes!

    You can SUBSCRIBE to receive my latest recipe newsletters or FOLLOW ME on FACEBOOK, INSTAGRAM and PINTEREST for even more delicious food.

    A spoon scooping out sweet potato casserole.

    Sweet Potato Casserole with Marshmallows

    Sweet potato casserole with marshmallows is a popular Thanksgiving side dish that combines creamy mashed potatoes with toasted marshmallows.
    5 from 2 votes
    Print Pin Rate
    Course: Side Dish
    Cuisine: American
    Prep Time: 10 minutes
    Cook Time: 1 hour 5 minutes
    Total Time: 1 hour 15 minutes
    Servings: 12 servings
    Calories: 175kcal
    Author: Kate @ I Heart Eating

    Equipment

    • 2 quart casserole dish

    Ingredients

    • 2 pounds sweet potatoes
    • â…“ cup brown sugar
    • ¼ cup butter melted
    • ¼ cup milk
    • 2 large eggs
    • ½ teaspoon vanilla extract
    • ½ teaspoon salt
    • ¼ teaspoon cinnamon
    • 3 cups mini marshmallows

    Instructions

    • Preheat oven to 400°F. Line a sheet pan with foil.
    • Pierce the potatoes all over with a fork.
    • Bake for 30-50 minutes, depending, on the size of your sweet potatoes, or until the potatoes fork tender. You can tell if they're fork tender because the fork will easily go through the potatoes.
    • Carefully cut the potatoes in half, and allow them to cool.
    • Decrease the oven temperature to 350°F.
    • In a medium bowl, whisk together the sugar, butter, milk, eggs, vanilla, salt, and cinnamon.
    • Scoop the flesh of the potatoes, and add it into the bowl.
    • Mash everything together.
    • Spread the mixture into a medium (2 quart) casserole dish.
    • Bake for 25-30 minutes until heated though.
    • Top the potatoes with the mini marshmallows and return to the oven to bake for an additional 10 minutes, or until the marshmallows are golden brown.

    Notes

    • Sweet potatoes - Most of the yams sold in the U.S. are actually sweet potatoes. Feel free to use "yams" if you can't find sweet potatoes.
    • Brown sugar - Light or dark brown sugar will work. Whether or not you should pack the brown sugar depends on your desired sweetness.
    • Pack the brown sugar for a sweet casserole.
    • Butter - I like to use salted butter. Feel free to use unsalted butter if you prefer.
    • Milk - Any milk from skim to whole milk will work. Whole milk will give you a creamier casserole.
    • Eggs
    • Vanilla
    • Salt
    • Ground cinnamon - Pumpkin pie spice also work well.
    • Mini marshmallows
    • Nutrition values are estimates. 

    Nutrition

    Serving: 1serving | Calories: 175kcal | Carbohydrates: 32g | Protein: 3g | Fat: 5g | Saturated Fat: 3g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 38mg | Sodium: 197mg | Potassium: 283mg | Fiber: 2g | Sugar: 17g | Vitamin A: 10894IU | Vitamin C: 2mg | Calcium: 40mg | Iron: 1mg
    Tried this recipe? Rate it below. Mention @i_heart_eating on Instagram & tag #ihearteating!
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    About Kate

    Kate got her first cookbook when she was five years old, and she hasn't stopped cooking since then! Her delicious recipes have been featured on Food Network, MSN, Better Homes & Gardens, Buzzfeed, The Huffington Post, and more. When she's not cooking or baking, she can be found on her mini farm with her husband and her five kids.

    Reader Interactions

    Comments

    1. Linda

      February 15, 2022 at 10:14 am

      5 stars
      I tried out this recipe for Thanksgiving. It was delicious and will be going on our Thanksgiving menu next year.

      Reply
      • Kate

        February 15, 2022 at 10:20 am

        Thank you!

        Reply

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