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Slow Cooker Sweet Potato Casserole

On busy oven days this mouthwatering Slow Cooker Sweet Potato Casserole is a lifesaver! Fresh cubed sweet potatoes are tossed with brown sugar, butter, fresh orange juice and pumpkin pie spice then cooked until fork tender. After a quick mash and a healthy splash of cream, stir in mini marshmallows and sprinkle with chopped candied cinnamon sugar pecans. A final sprinkle of marshmallows on top and just a few more minutes to allow them to melt and become ooey gooey good.

Slow Cooker Sweet Potato Casserole

Easy Slow Cooker Sweet Potato Casserole Recipe

Sweet potato casserole is a must-have holiday dish. It goes perfectly alongside our Easter or Christmas ham.  My family’s Thanksgiving table just wouldn’t be complete without it and you’ll always find it in close proximity to the turkey. Just like you, we relish in many family favorite side dishes at the holidays. I digress a bit as this sweet potato casserole reminds me of all of the family get togethers and the food we enjoy each year. Sharing a delicious meal with loved ones is a gift all by itself with no purchase required.

ingredients to make Sweet Potato Casserole

How to Make the Best Slow Cooker Sweet Potato Casserole Recipe

I love serving this gooey goodness straight from my slow cooker knowing that they’ll be good to the very last spoonful.

  • Ingredients you’ll need to make easy Sweet Potato Casserole in a slow cooker: 4 pounds of raw cubed sweet potatoes, brown sugar, butter, pumpkin pie spice or cinnamon, orange juice, salt, heavy cream and vanilla.
  • For the topping you’ll need mini marshmallows and candied pecans for crunch. You could also use toasted chopped pecans, if that’s your preference.
  • How long does it take to cook sweet potato casserole in crockpot? This recipe takes around 3 1/2-4 hours to cook on the high setting.
  • Please note, the marshmallows will melt from the warm cooked sweet potato puree but they don’t brown as they would under the broiler in the oven. If your crock is oven safe, you may be able to do so after slow cooking the sweet potatoes in the crockpot. You could also use a pastry torch.
  • You can broil the mini marshmallows in the oven if you like, but it’s not necessary for these sweet potatoes to be decadent and delicious. Please only do so if the appliance crock that you’re using is oven safe. Check and follow the manufacturers safety recommendations.
cooked sweet potato casserole with marshmallows and pecans

Sweet Potato Casserole Recipe with Candied Pecans

  • To add a little crunch to this sweet potato casserole I chop candied cinnamon sugar pecans that I make myself every holiday season. You can buy candied pecans already made at most grocery stores.
  • Feel free to adapt the topping to your own taste using any candied nut or plain toasted pecans.
  • Store leftover sweet potato casserole in the refrigerator for up to 3 days. Reheat in the microwave in single serving potions.
  • You can freeze leftover sweet potato casserole for up to 1 month, Thaw in the refrigerator overnight and reheat in an oven safe dish in a preheated  350°F oven until heated through.
crockpot sweet potatoes

More Southern Style Holiday Recipes to Make

The ham and turkey seem to get all of the praise at the holidays, but I have to admit I’m all about the Southern sides. If you’re looking for more holiday inspiration checkout these recipes too:

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Slow Cooker Sweet Potato Casserole
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5 from 1 vote

Slow Cooker Sweet Potato Casserole

Prep Time15 minutes
Cook Time4 hours
Total Time4 hours 15 minutes
Course: Side Dish
Cuisine: American
Keyword: slow-coooked-sweet-potato-casserole
Servings: 16 servings
Calories: 264kcal
Author: Melissa Sperka


  • 4 lb raw sweet potatoes peeled and cut into 1/2-inch cubes
  • 1 cup light brown sugar
  • 4 Tbsp butter melted
  • 1/4 cup fresh orange juice
  • 1 Tbsp pumpkin pie spice
  • 1/2 tsp salt
  • 1/2 cup heavy cream
  • 1 tsp pure vanilla extract
  • 2 1/2 cups mini marshmallows divided
  • 1 cup candied cinnamon sugar pecans roughly chopped


  • Spray the slow cooker insert with cooking spray.
  • Place the cubed sweet potatoes in a large mixing bowl. Add the brown sugar, meltd butter, orange juice, pumpkin pie spice and salt.
  • Mix until coated then pour into the slow cooker.
  • Cover and cook on high for 3 1/2-4 hours or until fork tender.
  • Uncover, add the cream and vanilla. Mash using a potato masher. Mix well.
  • Stir 1 cup mini marshmallows into the mashed sweet potatoes.Sprinkle the top with chopped pecans and the remaining marshmallows.
  • Cover and cook on low for 10 minutes just until the marshmallows are softened and slightly melted.
  • Keep warm until serving.


May substitute toasted pecans for candied pecans, if desired.
To toast pecans, spread on a baking sheet. Place into a preheated 350°F oven for 6-8 minutes, then cool.


Serving: 1serving | Calories: 264kcal | Carbohydrates: 44g | Protein: 3g | Fat: 8g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 1g | Cholesterol: 18mg | Sodium: 201mg | Potassium: 437mg | Fiber: 3g | Sugar: 26g | Vitamin A: 16293IU | Vitamin C: 5mg | Calcium: 57mg | Iron: 1mg
Tried this recipe?Mention @melissassk or tag #melissassk!



  1. Hi Melissa, This looks delicious and what I’ve been looking for, yummy and easy. Do you think it would be okay to peel and dice the sweet potatoes the night before and refrigerate overnight?

  2. Hi Melissa, thank you for this recipe. We are planning on trying it on Thanksgiving. Would the recipe still be good if we don’t add the marshmallows? We usually like this dish with only the candied pecans.

  3. 5 stars
    Big hit at our thanksgiving dinner. I would disagree with the 15 min prep time, those sweet potatoes are hard to cut. But the long cook time really frees up the rest of the time to work on other items. I was not able to find cinnamon pecans so used honey roasted instead. Will be making this recipe again!

    1. Hi Brekka, apple pie spice won’t ruin it, but you may consider using a little less as it has a different blend of spices. Use half the amount, taste and adjust. You may also opt to just use all cinnamon.

    1. Dairy and lactose free cream or half and half. You may also be able to adapt using coconut milk. I haven’t tested a dairy free option in this casserole but, if you’ve had success in the past with a similar product, it may work in this as well.

  4. Hi, do you know if you can use canned yams for this recipe? If so, would there be a time adjustment and what would that time adjustment be for use in the crockpot?

  5. So I’m running behind getting this dish going and I added the cream and vanilla in the beginning. Hope it still turns out ok! Ugh!

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