Holidays | Recipes | Side Dishes | Thanksgiving | Vegetarian

Canned Sweet Potato Casserole with Marshmallows

This canned sweet potato casserole is a budget friendly recipe for the holidays that comes together in 25 minutes! It’s a quick and easy Thanksgiving side dish that’s made with canned sweet potatoes.

canned sweet potato casserole on a plate

I’m really picky about what goes into my holiday recipes, especially the ones that are iconic, like sweet potato pie and sweet potato casserole with marshmallows.  It’s the mallows, ya’ll!

Incidentally, if you’ve never heard a girl from the Midwest speak with a southern drawl, amuse yourself sometime and request it. It’s the funniest danged thing ya’ll will ever hear.

What I mean to say is that the sweet potato casserole that I eat on Thanksgiving must have marshmallows in it.

Canned Sweet Potato Casserole

What I love the most about this particular recipe is how budget friendly it is. Because I purchased absolutely every ingredient for the recipe at Dollar General, this delicious canned sweet potato casserole cost me less than fifty cents per serving to make. That’s crazy awesome, especially since the price of sugar has risen so much in the past year.

There are just a few simple ingredients and a couple of spices needed to make the recipe:

  • canned yams or peeled and cooked sweet potatoes.. (read more below)
  • brown sugar – to lower the calories, you can use a low glycemic brown sugar substitute
  • butter
  • maple syrup
  • chopped pecans
  • mini marshmallows – or use these vegan marshmallows

canned sweet potato casserole in a bowl with spoon

How do you make sweet potato casserole with canned potatoes?

Assembling the canned sweet potato casserole is super quick and easy. All you need to do is drain the canned sweet potatoes, then mash ’em, mix in the rest of the ingredients, top it off with mini marshmallows and put it into the oven to toast those babies up.

It doesn’t get any easier and it definitely meets the It’s Yummi test for taste! Now if you want to use fresh sweet potatoes you most certainly can. You want to peel and pre-boil (much like how to make mashed potatoes) them ahead of time then proceed with the recipe.


More Must-Have Thanksgiving Sides:

Overhead shot of sweet potato casserole with bowl and fall leaves

Are you ready to make your holiday meal prep easier? Then head to the kitchen to whip up this canned sweet potato casserole recipe. Don’t forget the marshmallows!

Canned Sweet Potato Casserole with Marshmallows

Creamy sweet potatoes are lightly sweetened and seasoned, then mashed and topped with crunchy pecans and marshmallows. It's all baked up until toasty brown and yummi!
4.30 from 24 votes
Prep Time 5 mins
Cook Time 20 mins
Total Time 25 mins
Course Side Dish
Cuisine American
Servings 6
Calories 310 kcal



  • 1.75 pounds cooked sweet potatoes (OR 29-ounce can, drained of all liquid)
  • 1/4 cup brown sugar substitute or brown sugar, packed
  • 2 Tablespoons maple syrup
  • 3 Tablespoons unsalted butter softened
  • 1 teaspoon salt
  • 1 teaspoon ground cinnamon
  • 1/2 teaspoon vanilla extract
  • 1/2 cup finely chopped pecans divided in half
  • non-stick cooking spray
  • 1 cup vegan mini marshmallows or regular mini marshmallows


  • Heat oven to 375 degrees F. Grease the inside of an 11 x 7-inch baking dish with non stick cooking spray.
  • Place potatoes into a large mixing bowl. Add sugar, butter, salt, cinnamon, and vanilla extract; Mash mixture with a potato masher. 
    bowl of sweet potato mash
  • Stir in 1/4 cup of pecans.
  • Spread potato mixture into an even layer in the prepared baking dish. Sprinkle remaining 1/4 cup of pecans over the mixture, then top with marshmallows. 
  • Bake at 375 F. for 20 minutes or until marshmallows are toasted. Remove pan from oven and serve while warm.
  • If covered well and refrigerated, leftovers will stay good for up to 5 days. Reheat in a dish covered with aluminum foil in oven at 350 degrees F. for 15-20 minutes, or microwave uncovered for 2-3 minutes.



Recipe adapted from Cooking Light


Serving: 1gSodium: 468mgIron: 1mgCalcium: 58mgVitamin C: 3.1mgVitamin A: 18945IUSugar: 22gFiber: 5gPotassium: 498mgCholesterol: 15mgCalories: 310kcalSaturated Fat: 4gFat: 12gProtein: 3gCarbohydrates: 46g
Tried this recipe? Mention @itsyummi or tag #itsyummirecipe!

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    1. Apologies. We make a mention that if you are going to use canned sweet potatoes you need to drain the liquid within the post itself. We always recommend to read the entire post as we do tend to give quite a few tips within the post itself for that particular recipe. We have edited the recipe card to be more clear though if you are using canned potatoes. Hope you get a chance to make it again.

    1. The recipe says a 29 oz. can makes enough for 6 people. So that is 5 oz. per person. If you used a 40 oz can that would be enough for 8 people; so for 40 people you would need 5 40 oz cans or 7 29 oz. cans for 40 people. Of coarse, you will need to use 7 times the amount of the other ingredients, such as 2 1/2 sticks of butter, 3 1/2 teaspoons of vanilla, etc.

  1. Delish! My family had no idea that these were canned sweet potatoes. This recipe was so delicious and easy to make that I will be making it every thanksgiving. Thanks for sharing!

  2. Can you use a 40 oz can instead of 29 oz? If so how much would the ingredients change. I want to make it for Thanksgiving

    1. It shouldn’t make a huge difference if using 40oz. Just more sweet potato more the fun.

      (Apologies it took us this long to respond and hopefully your dish turned out well with this change! We took the holidays off for some RnR this year)

    1. Yes you drain them. We make a mention about this in our post. Always a good idea to read our posts since we’ve always got tid bits and tips to helping making our recipes. 🙂

  3. When do you add the maple syrup? It doesn’t mention it in the recipe. Going to make this for Thanksgiving. Seems easy enough.

    1. Add it when you are adding the sugar. Maple syrup is sugar but we’ll edit the recipe to make it a bit more clear. 🙂

  4. OH! This sounds SO much easier and better than the recipe I have used in the past! I am definitely going to try this out this year!!! THANK YOU!
    AND I have a Dollar General just down the road! I never thought about getting food there!

    Thank you for linking up with the Blog with Friends Thanksgiving Projects! 😀

    1. You’re so very welcome, Stacy, and thank you for the sweet comment! YES YES, Dollar General sells food, and a lot of it is cheaper than you’d find it at the grocery store. Especially things like spices and baking products like sugar. Check it out!

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