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 Stars4 Stars3 Stars2 Stars1 Star5 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 put eggs in sweet potato casserole? ›

A really good sweet potato casserole filling should be light and moist, not dense. If it's dense, then you may not have added an often overlooked ingredient—an egg. An egg adds lift, structure and volume and makes the filling more custard-like.

How to make sweet potato casserole not runny? ›

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!

Why do you soak sweet potatoes before baking? ›

The cold water bath helps rinse the starch off the sweet potatoes so they're a bit more crispy. That said, if you do not have the time, you can still get crispy baked sweet potato fries by using high heat and a little drizzle of olive oil.

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

The difference is that sweet potato casserole can either have a toasted marshmallow top or a crunchy brown sugar/nut top and is made with brown sugar in the casserole. Sweet potato pie is made with white sugar, has nothing on top, but can be served with whipped topping.

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!

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.

How do you make a casserole less liquidy? ›

10 Tips To Fix Or Prevent Watery Casseroles
  1. Prep Vegetables Ahead Of Time. Vegetables boiling on a stove - Solstock/Getty Images. ...
  2. Add A Starch. ...
  3. Experiment With Pasta Or Grains. ...
  4. Take The Lid Off. ...
  5. Drain Fat From Meat. ...
  6. Choose A Dry Or Low-Fat Cheese. ...
  7. Sprinkle Seeds Into Your Bake. ...
  8. Remove Excess Liquid.
Oct 29, 2023

How do I thicken up my sweet potato casserole? ›

All-purpose flour will help thicken the sauce and give some structure. Maple syrup balances the sweetness and adds flavor. All granulated sugar can be too sweet.

What happens if you don't soak sweet potatoes? ›

However, when it comes to using soaking as a means to prevent oxidation, it's unnecessary to soak sweet potatoes. Sweet potatoes can be diced or peeled, and stored in the refrigerator for several days without changing color. White and yellow potatoes, on the other hand, will oxidize much easier.

Why is boiling a sweet potato better than baking? ›

Boiling sweet potatoes retains more beta-carotene and makes the nutrient more absorbable than other cooking methods such as baking or frying. Up to 92% of the nutrient can be retained by limiting the cook time, such as boiling in a pot with a tightly covered lid for 20 minutes.

Is it better to peel sweet potatoes before or after boiling? ›

There is not much difference between boiling sweet potatoes with the skins on versus peeling them, but you will get a boost of fiber and potassium if you keep the skin on. The skin also adds a subtle texture to each bite. If you're looking for a smoother mash, peel the potatoes first before boiling.

Why is sweet potato casserole not a dessert? ›

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.

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.

What is the purpose of adding eggs in baking? ›

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.

What is the purpose of putting an egg in 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.

How can I thicken my 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 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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