Lighter Sweet Potato Casserole Recipe (2024)

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This light Sweet Potato Casserole Recipe gets its sweetness and creaminess from low-fat vanilla yogurt instead of butter, cream, and sugar.

As a Canadian, I didn’t grow up eating the classic American Sweet Potato Casserole, or very many sweet potatoes at all. When I finally tasted this traditional Thanksgiving side dish, I didn’t love it. I’m sorry. I found it too sweet and kind of strange. Marshmallows at dinner time?

That was a long time ago though. These days I’m totally on board with it! Except for, well, I’m never sure I want to have very much because I know that it’s loaded with butter and cream and those marshmallows! I’d much prefer to save my calories for this perfectly roasted turkey, the stuffing and gravy – oh, and the pumpkin pie of course!

The goal for today’s recipe was therefore to find a sweet potato casserole that both I and traditionalists will enjoy. This recipe is a touch less sweet than the classic. But you can add some extra brown sugar if you really need to. Check out the recipe below. It tells you when to taste it and when and how much sugar to add if you like it sweeter than I do.

Jump To:

  1. Video: Delicious and Healthy Sweet Potato Casserole
  2. Making Sweet Potato Casserole Lighter And Healthier
  3. What About The Topping?
  4. More Thanksgiving Recipes
  5. Podcast Episode: Making Sweet Potato Casserole
  6. Healthy Sweet Potato Casserole Recipe
Lighter Sweet Potato Casserole Recipe (1)

Video: Delicious and Healthy Sweet Potato Casserole

Making Sweet Potato Casserole Lighter And Healthier

For the lightened sweet potato recipe below, I’ve played around with the basics a bit to come up with something that’s just as creamy as the original but a bit healthier. This version doesn’t have any butter or cream. Instead, the creaminess comes from vanilla yogurt. It still has the flavor you love, just with a couple tweaks to the original recipe.

To further reduce the sugar in the recipe, I’ve tweaked the classic sweet potato casserole topping by cutting back on the marshmallows. The marshmallows are still there and their brown puffiness will please traditionalists. But they don’t cover the whole casserole in melted candy.

What About The Topping?

As for the Sweet Potato Casserole Topping, I have a trick for making sure that the marshmallows don’t get crunchy. First, you bake the casserole for awhile without the topping. Then you add the pecans and marshmallows and continue to bake just until the marshmallows are puffed softly and starting to brown. This ensures that the pecans don’t get overly dark and bitter as well.

Don’t want marshmallows at all? Try making a pecan crumble mixture for the topping! Finely chop up the pecans and mix with old fashioned oats, melted butter or coconut oil, and some brown sugar if you’d like. Mix it all up and sprinkle on top of the sweet potato mixture instead of the marshmallows.

More Thanksgiving Recipes

If you’re looking for more healthy Thanksgiving side dishes, be sure to also check out my recipe forGreen Bean Casserole from Scratch. It’s just as tasty and just as easy as the original but with fresher ingredients.

You can also browse all my Thanksgiving recipes, including turkey and cranberry sauce, in my Thanksgiving collection to complete your meal.

Podcast Episode: Making Sweet Potato Casserole

Listen to me explain briefly about how to make this casserole, with some great tips along the way, by clicking the play button below:

Listen to more Recipe of the Day episodes here.

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Lighter Sweet Potato Casserole Recipe (2)

Healthy Sweet Potato Casserole Recipe

★★★★★5 from 2 reviews
  • Author: Christine Pittman
  • Prep Time: 20 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour 5 minutes
  • Yield: 12 servings 1x
  • Category: Side Dish
  • Method: Baked
  • Cuisine: American
Print Recipe

DESCRIPTION

This healthier twist on the classic Sweet Potato Casserole uses low-fat vanilla yogurt instead of butter and cream. And there are fewer marshmallows on top.

Ingredients

UnitsScale

  • 3 lbs. sweet potatoes, peeled and cut into 3/4-inch cubes
  • 1 cup low-fat vanilla yogurt
  • 1 tsp. cinnamon
  • A pinch of nutmeg
  • A pinch of salt
  • Brown sugar (optional)
  • 4 large egg whites OR 2 large whole eggs, lightly beaten
  • 3/4 cup chopped pecans
  • 1/2 cup mini marshmallows

Instructions

  1. Preheat oven to 350°F. Lightly grease or spray a 2.5 quart casserole dish.
  2. Put the sweet potatoes in a medium sauce pan with enough water just to cover them. Bring to a boil over high heat. Reduce to a simmer and cook until fork-tender, 5-7 minutes. Drain them.
  3. Return the sweet potatoes to the pot and use an egg beater to mash them up (or transfer them to the bowl of a stand mixer and beat them in there.
  4. Add the yogurt, cinnamon, nutmeg, and salt. Beat some more. Taste it. If it’s not sweet enough for you, beat in brown sugar 1 tablespoon at a time and taste.
  5. Once you’re satisfied with the sweetness, add the eggs and beat them in as well. Transfer the mixture to the lightly greased (or sprayed) casserole baking dish.
  6. Bake for 30 minutes. Top evenly with the pecans and marshmallows and continue to bake until marshmallows are puffed and lightly browned, 10-15 more minutes.

Love this recipe? I’d appreciate it if you could scroll down and add a *5 star rating* to help others know they’ll love it as well!

This post originally appeared in November 2014 and was revised and republished in November 2022.

Lighter Sweet Potato Casserole Recipe (3)

Lighter Sweet Potato Casserole Recipe (2024)

FAQs

Why add eggs to sweet potato casserole? ›

The egg is the all-important binder in a sweet potato casserole: it enriches and stiffens the mixture without making it heavy. Make sure to cool the mash slightly before adding the egg so it doesn't scramble, and to stir well so there are no streaks of cooked egg white in the finished dish.

How to thicken 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.

What does baking soda do to sweet potatoes? ›

Baking Soda – boiling the potatoes in baking soda draws out the starch and allows the outside to get brown and crispy. Sweet Potatoes – yams work fine too. Extra Virgin Olive Oil – gets infused with rosemary and garlic and is the key to getting that crispy exterior.

Does cooked sweet potato weigh less? ›

In general, you can expect cooked sweet potatoes to weigh around 75-80% of their raw weight. For example, if you start with a raw sweet potato that weighs 500 grams, you can expect the cooked sweet potato to weigh around 375-400 grams.

What makes sweet potatoes taste better? ›

Dice the sweet potato, and leave the skins on. Then toss the chunks in a splash of tamari, oil, and maple syrup, and then dust heavily with chili powder, smoked paprika, and garlic powder. Roast at 400 Fahrenheit for about 30-50 minutes, or until the potatoes begin to crisp up.

Why is boiling not good for sweet potatoes? ›

Bake, don't boil

It intensifies their flavor and creates a richer taste compared to boiling, which can result in a watered-down, bland flavor. As the oven temperature rises (when baking), the molecular structure of the sugar molecules in the sweet potatoes begins to change.

Why do you need to soak sweet potatoes before cooking? ›

Some recipes for homemade sweet potato fries ask you to soak the fries before cooking. The theory is that soaking draws out starch from inside the potatoes, helping them crisp up.

Is it better to boil or bake sweet potatoes? ›

Baking can also cause an 80% drop in vitamin A levels, twice as much as boiling. Therefore, from a nutritional standpoint, boiling rather than baking should be recommended for cooking sweet potato.

How do you reduce sugar in sweet potatoes? ›

Sweet potatoes can have a low, medium, or high glycemic index depending on how they're cooked and prepared. Boiled sweet potatoes affect blood sugar levels far less than other varieties, such as fried, roasted, or baked versions. Longer boiling times reduce the GI further.

How many cups is 1lb cooked sweet potato? ›

For cooking purposes, 1 pound of sweet potatoes equals about three medium whole, 2 cups mashed or 3½ to 4 cups chopped.

Is sweet potato good for fat loss? ›

Absolutely. Besides their health benefits, sweet potatoes are a great addition to any weight loss diet. First up, they're very high in fibre — especially soluble fibre. Soluble fibre is excellent because it slows down your digestion and helps you feel full, which can curb the urge to snack between meals.

Is it good to eat sweet potatoes raw or boiled? ›

The healthiest ways to prepare sweet potatoes are to steam or boil them. You can also bake, roast, or fry sweet potatoes, but you should take care to limit these preparation methods, which will cause the sugars to break down in different ways and often include extra recipe ingredients like oil, butter, or sugar.

Why add egg to casserole? ›

If you add more eggs, it will result in a casserole that is more firm and less likely to deflate.

What is the purpose of adding eggs in baking? ›

What Eggs Do in Baking Recipes. 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.

Does egg thicken casserole? ›

Thicken with Eggs

First you need to drizzle a small amount of the hot liquid onto the egg, whisking vigorously as you pour. Then stir the egg back into the pan and heat gently until it starts to thicken. This is a similar method to the one we use in our Carbonara recipe!

Why do people put an egg in their mashed potatoes? ›

Adding egg yolks to a pot of mashed potatoes is an easy, dairy-free texture and taste upgrade that doesn't require any special techniques. The yolks harbor all the flavorful fats and emulsifying components and will thus effectively unify the fat and water in potatoes, translating to a smoother, uniformly creamy pot.

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