Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (2024)

This is the best part of any holiday dinner. Sweet Potato Casserole with Marshmallows is what everyone looks forward to! You can make it in a mini baking dish to serve two for a small holiday menu, or you can double it and bake it in an 8-inch square casserole dish. Whatever you do (and I have directions for both below), keep your eye on the marshmallows as they toast so that they don't burn! And yes, there really is an egg in the filling--this is what makes it fluffy and light!

Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (1)

This Sweet Potato Marshmallows Casserole Recipe will change your life

If you think sweet potato casserole is just mashed sweet potatoes topped with marshmallows, lean in, because I need to teach you the way.

Sweet potato casserolecontains mashed sweet potatoes, but it also contains other ingredients that make it puff up and so fluffy. Twos whole egg in this casserole makes the sweet potatoes light and fluffy, almost like a soufflé. The milk and butter make it super creamy, and the addition of vanilla makes it border on dessert.

It's not your fault if you've been served bad sweet potato casserole in your life, and it's also not your fault if you've been the one serving it. The only good sweet potato casserole recipe in the world comes from Southern Living. All other recipes can exit stage left. Burn your recipe cards; memorize this recipe.

I know it sounds extreme (and it also sounds like I'm talking about my Southern Cornbread Dressing recipe), but sweet potato casserole with marshmallows and Southern Cornbread Dressing are two recipes that are sacred to me, and I will not tolerate renditions or bad versions. You're either with me or you're not.

Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (2)

You'll notice my sweet potato casserole doesn't contain cinnamon or any other spices, except vanilla. In my experience, those spices compete with the marshmallow flavors. Vanilla heightens the flavors of the marshmallows, and the two work together to create a sweet potato cloud. It's HEAVEN. If you feel you must, you can add a half-teaspoon of ground cinnamon.

Sweet Potato Casserole ingredients

Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (3)

Sweet Potatoes. It's best to start with whole sweet potatoes. You need one pound for a small baking dish, or two pounds for an 8" square baking dish that serves 4-6.

Granulated Sugar.

Butter. Unsalted butter preferably, because we're adding salt to this recipe. Melt the butter just before starting on the recipe, and let it cool slightly to the side.

Milk. Whole milk is best.

Egg. One large egg.

Vanilla Extract.

Marshmallows.You can use a mix of mini and large marshmallows, or all of the same. If you use large ones, be sure to snip them in half.

How to make Sweet Potato Casserole

Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (4)
Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (5)

First, prick the sweet potatoes all over with a fork, and roast them in a 400-degrees Fahrenheit oven for 40-50 minutes, or until soft. When you poke a skinny sharp knife all the way to the center of the sweet potato, it should be soft and yielding. The skin of the potatoes will start collapsing. Be sure the sweet potatoes are all the way cooked before proceeding. Let them cool for 20 minutes before attempting to handle.

Once the potatoes are done cooking, lower the oven to 350-degrees F. While the potatoes cool, whisk together the sugar, butter, milk, melted butter, vanilla and salt. Whisk together VERY well.

Next, scoop out the sweet potatoes and add them to the bowl with everything else. Use a spatula or hand mixer to beat the sweet potatoes into the mixture.

Test the temperature of the mixture, and if it feels barely lukewarm, it's time to add the eggs. Do not add the eggs if the mixture is hot. Instead, let it rest on the counter while occasionally mixing to cool.

Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (8)
Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (9)

Next, spread the mixture into the baking dish that you're using. Bake this for 20 minutes. Up to this point, you can make this up a day ahead of time. (See below for full instructions on making this ahead of time).

About 10 minutes before you want to serve this, sprinkle the marshmallows on top. Slide back into the oven for 5-10 minutes. Keep an eye on it so the marshmallows don't burn! Mini marshmallows toast faster than larger ones.

Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (10)

Sweet Potato Casserole Recipe notes

If you want a small batch, I can help you! I have made this small batch sweet potato casserole in a mini (the same one that I used for my Southern Chocolate Cobbler). I use this oval 0.6L oven-safe baking dish when I want to serve two.

Basically, all I did was scale down the filling and adapt it for this small baking dish for two. While the original recipe calls for 2 whole eggs for over 4 pounds of potatoes, I used one whole egg for 1 pound of potatoes. The egg is what makes the filling super fluffy! Also, I promise it cooks completelyin the oven.

See the recipe card below for exact notes on how to make this serve two for your Thanksgiving for Two thing.

This recipe also belongs in my roundup of Thanksgiving Recipes: Sides!

Sweet Potato and Marshmallows Casserole FAQs

How to make sweet potato casserole ahead of time:

You can make this casserole ahead of time up through step 4. Let it cool, cover it with plastic wrap and store in the fridge for up to 2 days. On the day you want to serve it, place it in a 350-degree F oven for 30 minutes to warm it through. Then, 10 minutes before you want to serve it, add the marshmallows on top. Slide it back into the oven for 5-10 minutes, until the marshmallows toast and turn lightly golden brown. As marshmallows sit, they dissolve fully into sugar. So, if you add and toast the marshmallows too soon, they will melt and dissappear! Warm the casserole through and add the marshmallows just 10 mintues before serving for best results with this recipe!

Can I double this recipe?

Yes, this recipe is for an 8x8" pan, but you can double it exactly and bake it in a 9x13" pan for a bigger Thanksgiving celebration. To make it for two, check the recipe card for ingredient amounts, and bake it in this small casserole dish.

How to store Sweet Potato Casserole with Marshmallows

If you have leftovers, cover in plastic wrap and store in the fridge for up to 3 days. The marshmallows will slowly disappear, which just means they have melted into the sweet potatoes. They still taste amazing. If you want to top with more marshmallows and toast, you can!

Is it better to boil or bake sweet potatoes for casserole?

In my opinion, it is much better to bake sweet potatoes that will be used for a casserole. This is because baking concentrates the flavors, while boiling adds water to the vegetable. We want creamy, fluffy casseroles, not soggy ones!

Why do you put eggs in sweet potato casserole?

Eggs provide two things: emulsion and lift. Eggs bind all of the casserole ingredients together, and when eggs are baked, they rise and puff up in the oven. Eggs are key to a great casserole.

Are yams the same as sweet potatoes?

Yams are actually a different genus than sweet potatoes. Yam skin is brown, and yams are typically longer and skinnier than sweet potatoes. Both yams and sweet potatoes can be any color (white, orange, red, or purple).

Happy Thanksgiving, everyone! I hope your turkey is moist, your sweet potatoes are fluffy, your dressing is perfect, your gravy is smooth, and your cranberry sauce is tangy!

Other sides you might like:

-Broccoli Rice Casserole

-Broccoli Rice Chicken Casserole

-Make Ahead Mashed Potatoes

-Green Bean Casserole

More Favorites from Dessert for Two

  • Vegan Birthday Cake Recipe
  • Monster Chocolate Chip Cookies
  • Easy Chicken Parmesan
  • White Chocolate Raspberry Cheesecake Recipe
  • Recipe for Chicken Fried Steak
  • Brownie Dip with Cream Cheese

Yield: 6

Sweet Potato Marshmallows Casserole Recipe

Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (11)

Sweet potato casserole with marshmallows in 8-inch square dish. You can double it for a 9x13 dish.

Prep Time10 minutes

Cook Time55 minutes

Total Time1 hour 5 minutes

Ingredients

  • 2 pounds fresh sweet potatoes
  • 6 tablespoons granulated sugar
  • 4 tablespoons (2 ounces) unsalted butter, melted
  • ¼ cup milk
  • 2 large eggs
  • ½ teaspoon vanilla extract
  • ½ teaspoon salt
  • 3 cups mini marshmallows

Instructions

  1. Preheat the oven to 400, and gather ingredients. Line a sheet pan with foil, and place the sweet potatoes on it. Prick them with a fork, and then bake for 40-50 minutes, depending on their size. Test with a fork to ensure they're done--their skins will start to collapse when they're soft. Remove the sweet potatoes from the oven.
  2. Lower the oven temp to 350, and let the sweet potatoes cool for at least 20 minutes. Meanwhile, in a bowl, whisk together the sugar, butter, milk, vanilla, and salt.
  3. Peel the sweet potatoes and add them to the bowl. Stir and mash everything together to combine. Finally, stir in the egg.
  4. Spread the mixture into a small 20-ounce (0.6L) baking dish, and bake for 20 minutes.
  5. Remove the baking dish, scatter the marshmallows on top, and bake for another 5-10 minutes, until the marshmallows toast and become lightly golden brown. Serve immediately.

Notes

To make this ahead of time: You can make this casserole ahead of time up through step 4. Let it cool, cover it with plastic wrap and store in the fridge for up to 2 days. On the day you want to serve it, place it in a 350-degree F oven for 30 minutes to warm it through. Then, 10 minutes before you want to serve it, add the marshmallows on top. Slide it back into the oven for 5-10 minutes, until the marshmallows toast and turn lightly golden brown. As marshmallows sit, they dissolve fully into sugar. So, if you add and toast the marshmallows too soon, they will melt and dissappear! Warm the casserole through and add the marshmallows just 10 mintues before serving for best results with this recipe!

You can make this serve two in a small 0.6L baking dish (linked below) using these measurements and the same cooking time: 1 pound sweet potatoes, 3 tablespoons sugar, 2 tablespoons unsalted butter, melted, 2 tablespoons whole milk, 1 large egg, ¼ teaspoon vanilla extract, ¼ teaspoon salt, and 1 ½ cups mini marshmallows.

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Nutrition Information:

Yield:

6

Serving Size:

1

Amount Per Serving:Calories: 362Total Fat: 10gSaturated Fat: 6gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 83mgSodium: 340mgCarbohydrates: 65gFiber: 5gSugar: 37gProtein: 6g

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Sweet Potato Casserole with Marshmallows Recipe - Dessert for Two (2024)

FAQs

Why put egg in sweet potato casserole? ›

Eggs help bind and lift the casserole for a light, set texture once baked. Sweet potato casserole can also be made without eggs, if needed.

How do you thicken a sweet potato casserole? ›

How do you thicken a sweet potato casserole? If you are not adding eggs, you can thicken your sweet potato casserole by adding a bit of flour or cornstarch. You will need about 2-3 tablespoons of flour and 1 tablespoon of cornstarch.

Why do people put marshmallows in sweet potatoes? ›

Despite what your grandmother says, this cloying side dish didn't originate as a family recipe. It was concocted by Big Marshmallow as a way to push the candy on Americans. Though the tubers are high in sugar to begin with, there's historical precedent for treating sweet potatoes like dessert.

Is sweet potato casserole considered a desert? ›

Many contend the traditional southern dish is 100 percent a dessert, because its served in a pie crust. But others argue sweet potatoes are vegetables, regardless of the crust, and nobody considers meat pies dessert.

Can I leave eggs out of sweet potato casserole? ›

Eggs (or not!)

– I've made this sweet potato casserole with and without eggs, both ways are delicious. The eggs act as a binder and gives the casserole a light and fluffy texture. Without eggs, the casserole doesn't have as much structure but it still silky smooth and tastes delicious.

How do you make sweet potato casserole not watery? ›

Eggs and cream help stabilize the dish and prevent it from becoming too runny (a common complaint with many sweet potato casserole recipes). Make it as smooth or chunky as you like!

Can I use canned sweet potatoes instead of fresh? ›

Canned or frozen sweet potatoes may be substituted for the fresh form in any recipe calling for cooked sweet potatoes as the starting point. Canned sweet potatoes are generally smaller in diameter because of their better canning qualities.

How do I know when my sweet potato casserole is done? ›

Bake until mostly set in the center and golden on top, 25 to 30 minutes. Serve hot.

Why is my sweet potato casserole so watery? ›

Why is my sweet potato casserole watery? If you overcook your sweet potatoes, they may begin to absorb too much liquid, making them watery. It's important to cut your potatoes into equal-sized pieces so that they all cook at the same rate. Make sure to remove them from the steamer as soon as they are fork-tender!

Why do people not eat the skin of sweet potatoes? ›

Sweet potato skins are rich in oxalates. This means that if you are high risk of kidney stones, you may need to limit your consumption. In rare cases, excessive consumption of vitamin A can lead to vitamin A toxicity.

What does sweet potato do for mental health? ›

Sweet potatoes are rich in the antioxidant beta-carotene, D'Ambrosio says. This helps in reducing damage to the brain cells, which can have a negative impact on mental health. It can also be helpful in reducing the oxidative stress on DNA, which has been linked with depression, anxiety and schizophrenia, she adds.

What variety of sweet potato is best for casserole? ›

Jewel. With copper skin and deep-orange flesh that's moist and tender when cooked, the jewel is a go-to potato for traditional baking and casseroles.

Are candied yams and sweet potato casserole the same thing? ›

Spoiler: They're not the same vegetable.

That's because sweet potatoes and yams are in fact very different vegetables that we've come to refer to interchangeably for a number of reasons over the years. While a dish may arrive at your table calling itself "candied yams," it may well have been made with sweet potatoes.

What's the difference between yams and sweet potato casserole? ›

Yams and sweet potatoes differ in flavor and appearance, and they are not related. Sweet potatoes are in the morning glory family, while yams belong to the lily family. Yams aren't as sweet as sweet potatoes, and they are starchier and drier. Their texture and flavor are more similar to potatoes or yuca.

Does egg thicken casserole? ›

The proteins in eggs coagulate or set at different temperatures. This results in thickening but it means that eggs must be cooked gently and heated carefully or they will scramble rather than thicken a sauce or other mixture.

What is the purpose of eggs in a baked goods recipe? ›

Eggs play an important role in everything from cakes and cookies to meringues and pastry cream — they create structure and stability within a batter, they help thicken and emulsify sauces and custards, they add moisture to cakes and other baked goods, and can even act as glue or glaze.

Why is my sweet potato casserole so runny? ›

If your sweet potato casserole turned out “watery”, its usually because you forgot to add eggs; you didn't let your casserole have enough time to set up after baking or you used fresh sweet potatoes and didn't boil them long enough before mashing.

What does adding an extra egg do to baked goods? ›

Eggs are responsible for giving baked goods structure, which means the amount you use directly affects the resulting texture. Using too few eggs will make your desserts dense, but using too many will make them rubbery. The explanation for this lies in the fact that eggs are made up of protein.

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