Keto Sweet Potato Casserole

by Joanna
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This easy keto sweet potato casserole recipe is the best side dish for any holiday table. Luscious and super creamy, this mock sweet potato casserole recipe is made with cauliflower and pumpkin puree.

Sweet Potato Casserolle

Topped with caramelized pecans, this healthy low carb sweet potato casserole tastes just like the original minus the carbs. It has no sugar added and no sweet potatoes, yet the texture and flavor are identical. No one can tell this casserole is sugar-free and keto friendly.

Just think about a “sweet potato” creamy filling topped with a crispy topping mixture and then roasted until crispy and creamy.

When it comes to holiday desserts, I love making my keto pumpkin pie, keto pecan pieketo cranberry muffins, low carb apple pie, chocolate cake, and this sweet potato casserole.

This low carb sweet potato casserole is a classic at any Thanksgiving table, and it’s definitely going to impress everyone.

Are Sweet Potatoes Keto-Friendly?

Unfortunately, sweet potatoes are not keto-friendly because they are too high in carbs in sugar. According to the USDA website, 1 cup of sweet potatoes (144g) provides 26g of carbs, 4g of fiber, and 5.5g sugar. 

But fortunately, there are keto substitutes that replace them successfully.

What Is Sweet Potato Casserole?

Sweet potato casserole is a side dish recipe made with mashed sweet potatoes, sugar, and spices, topped with a mix of nuts and marshmallows. This recipe is usually made on Thanksgiving as a side dish for roasted turkey or ham recipes.

Why Are You Going To Love This Low Carb Sweet Potato Casserole Recipe

  • Made with just a few easy and naturally low-carb ingredients.
  • Only 5g net carbs per serving
  • It’s loaded with a lot of delicious fall season flavor
  • It’s a sugar-free and gluten-free recipe that pairs perfectly with savory sides.
Sweet Potato Casserolle

Keto Sweet Potato Casserole Ingredients

To make this delicious sweet potato casserole, you’ll need a few ingredients that are naturally low in carbs. Here’s everything you’ll need:

For The Sweet Potato Filling

  • Pumpkin Puree- this is one of the best sweet potato substitutes. It gives that color and sweet taste of sweet potatoes.
  • Cauliflower – help to give this casserole that potato texture.
  • Butter – you can use both unsalted or salted butter.
  • Eggs – helps everything bind together.
  • Spices –  I used fall season spices like cinnamon, nutmeg, ginger, and cloves. 
  • Sweetener – feel free to use any powdered sweetener you like.

For The Pecan Topping

  • Pecans – give that crispy texture to the casserole.
  • Brown Sweetener – use your favorite brown sugar substitute.
  • Butter – for extra flavor.

How To Make This Keto Sweet Potato Casserole

Another great thing about this sweet potato casserole is that it’s extremely easy to make by following a few simple steps. Here is everything you will need: 

  1. Start by preheating your oven to 400F/ 200C.
  2. Wash the cauliflower and cut it into florets. Roast the cauliflower until fork tender.
  3. Add all the “sweet potato” filling ingredients into a food processor and blend until smooth.
  4. Spread the mixture in a 9×13-inch casserole dish.
  5. Make the topping. Add all the ingredients into a mixing bowl and mix until well combined.
  6. Top the sweet potato filling with the topping and bake it in the preheated oven for 20-30 minutes or until golden brown.

Serving Suggestions

Some people like to enjoy this sweet potato casserole as a dessert or as a side dish for turkey and ham recipes on Thanksgiving and not only.

Sweet Potato Casserolle

Storing Leftovers

  • Fridge – You can store the leftovers in an airtight container in the fridge for up to five days.
  • Freezer – Freeze this casserole without baking for up to one month. When ready to enjoy, just pop it in the preheated oven and bake for 45-50 minutes or until the top looks golden.

How To Reheat The Leftovers

To reheat the leftovers, place them the preheated oven and bake them in the oven for 10 minutes. Another great option will be to use the microwave to reheat the leftovers.

Substitutions and Variations 

  • You can use butternut squash instead of pumpkin puree. Just chop it into cubes and roast it in the oven until fork tender.
  • Use a pumpkin pie spice mix instead of all the spices I used.
  • To make a dairy-free keto sweet potato casserole, replace the butter with coconut oil.
  • Replace the pecans with your favorite nuts, such as walnuts, almonds, or hazelnuts.
  • Top with sugar-free keto marshmallows.
  • If your food processor is too small, work in batches.

Frequently Asked Questions

Is Cauliflower Keto-Friendly?

Sure, with only 2.9g net carb per one cup, cauliflower is a delicious vegetable that is great for a keto diet. And the best part is that you can use it to make many delicious keto recipes.

More Keto Side Dishes

Sweet Potato Casserolle

Keto Sweet Potato Casserole

5 from 2 votes

Prep time 15 minutes
Cook Time 20 minutes
Yelds 8 servings


This easy keto sweet potato casserole recipe is the best side dish for any holiday table. Luscious and super creamy, this mock sweet potato casserole recipe is made with cauliflower and pumpkin puree.


  • 1 medium head of cauliflower chopped into florets
  • 1 cup pumpkin puree
  • cup sweetener
  • 3 large eggs
  • 4 tbsp butter melted
  • 1 tsp cinnamon
  • 1 tsp nutmeg
  • ½ tsp ground ginger
  • ¼ tsp cloves
  • ½ tsp salt

Pecan Topping


  • Preheat the oven to 400 °F/ 200°C.
  • In a large bowl, add the cauliflower florets, one tablespoon of melted butter, and a pinch of salt. Arrange them in a single layer. Toss to coat. Roast in the preheated oven for about 15 minutes or until fork tender. Remove from the oven and allow to cool for a few minutes.
  • Make the topping – In a medium bowl, combine chopped pecans, brown sweetener, butter, and cinnamon.
  • Assemble the “sweet potato casserole” – Place roasted cauliflower, pumpkin puree, sweetener, eggs, butter, cinnamon, nutmeg, ginger, and cloves in a food processor. Pulse until smooth and creamy.
  • Spread the mixture into a 9×13-inch casserole dish, smooth the top with a spatula and sprinkle the pecan topping.
  • Bake for 20 minutes or until the pecan topping looks golden and shiny.
Nutrition Facts
Amount per serving.
Total Carbs
Net Carbs

How do we calculate the nutrition info?

These nutrition facts listed are determined using nutrition information from the USDA Food Database. Our nutrition facts are accurate, but if you are using different products, please make your calculations. Net carb count is calculated by subtracting both fiber and sugar alcohols because they don’t raise blood sugar.

Course Side Dish
Cuisine American
Keyword Keto Sweet Potato Casserole
Tried this recipe?Mention @MyketoPlate_ or tag #MyKetoPlate!

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