This post may contain affiliate links, which help keep this content free. (Full disclosure)
It’s official, Thanksgiving is less than a month away! Where has the time gone? Are you thinking about what holiday side dishes you’re going to make yet? If you’re like me, you may be looking for a way to make a healthy sweet potato casserole, but don’t want all the carbs. How about a low carb sweet potato casserole recipe, hmm?
I know, I know… it’s not even Halloween yet! Why am I talking about Thanksgiving already? Well, I’ll bet you’ve already figured out what you’re doing for Halloween, so on the blog it’s on to planning for the next holiday. After you hear about the low carb holiday side dish I’ve got for you today, you’ll see why!
My (extended) family has a holiday tradition of getting together at my second cousin’s parents’ house for Thanksgiving Day. I have yet to get a firm consensus for what their relationship to me is supposed to be. Third cousins? Second cousins once removed? We don’t have a large family, so even if they aren’t super close to me by blood, they’ve always been Aunt and Uncle to me growing up. Every November, my uncle prides himself in making the most perfect Thanksgiving turkey, while others contribute with salads and sides.
Last Thanksgiving, I brought my keto mashed cauliflower to our gathering and made everyone guess what it was. Some people thought it could be mashed potatoes, others figured out that it was mashed cauliflower, but ultimately it didn’t matter. Both groups gobbled it right up.
This year, I’ve made it a goal to low-carb-ify (new word right here, yeah!) another classic holiday side dish: Low Carb Sweet Potato Casserole with Pecan Crust! Which is now my version of a healthy sweet potato casserole.
Of course, actual sweet potatoes are too starchy for a low carb diet, but there’s no need to miss out. It turns out that roasted butternut squash and cauliflower make the perfect stand-ins. They just need a little sugar-free sweetener added to make them as sweet as sweet potatoes.
I like to use monk fruit allulose blend, which tastes like sugar, has zero net carbs, and doesn’t add any weird texture to this keto sweet potato casserole.
This pecan-crusted butternut squash and cauliflower casserole was the delicious result. I’m still calling it “low carb sweet potato casserole”, even sans the actual sweet potatoes, because it’s the perfect replacement. The bulk of it is just like silky smooth, buttery sweet potatoes, and the topping is all mouthwatering cinnamon-pecan crunch. It would be the perfect pairing with an herb roasted turkey or air fryer turkey breast.
I went through a couple of iterations to get the recipe just right. By the last one, I honestly thought it was – dare I say it? – better than sweet potatoes. Even though sweet potatoes do have some health benefits, this “healthy sweet potato casserole” has even more, sans the carbs.
If you do want to make a casserole that uses actual sweet potatoes, try Gluten-free Vegan Sweet Potato Casserole from A Mind “Full” Mom. It uses maple syrup, but you could swap that with the homemade sugar-free maple syrup that I like to make.
Just in case, I did a final test run on my husband, mom, and daughter. They all couldn’t get enough. Let me tell you, a nineteen-month-old isn’t going to pretend to like something just to be nice! She couldn’t stop eating this sweet (but sugar-free) low carb sweet potato casserole. That’s a sign, right there.
So, what are you making this Thanksgiving? Now you can officially cross that question off your list. Seriously, a healthy potato casserole with pecan crust is the side dish you need. Then try keto green bean casserole next!
Tools To Make Keto Sweet Potato Casserole
Tap the links below to see the items used to make this recipe.
- Large Mixing Bowl – These are my go-to mixing bowls. I love that this set comes with so many variations in size.
- Baking Sheets – You will need two baking sheets to roast your vegetables. This is the baking sheet I use in my kitchen.
- Food Processor – This food processor will work great for pureeing your vegetables.
Healthy Low Carb Sweet Potato Casserole Recipe
Healthy Low Carb Keto Sweet Potato Casserole Recipe
This keto sweet potato casserole recipe is actually a butternut squash cauliflower casserole, but tastes like the real sweet potatoes! Making healthy low carb sweet potato casserole is quick and easy.
Recipe VideoTap on the image below to watch the video.
Like this video? Subscribe to my YouTube cooking channel for healthy recipes weekly! (Click the bell icon to be notified when I post a new video.)
Tap underlined ingredients to see where to get them. Please turn Safari reader mode OFF to view ingredients.
Tap on the times in the instructions below to start a kitchen timer while you cook.
Preheat the oven to 400 degrees F (204 degrees C). Line two baking sheets with foil (greased lightly) or parchment paper.
In a large bowl, toss together the cubed butternut squash, cauliflower florets, a tablespoon of melted butter, salt, cinnamon, and black pepper.
Arrange the vegetables in a single layer on the lined baking sheets. Roast in the oven for about 30-35 minutes, rotating the pans halfway through, until both are very soft and golden. (If your pans don't fit in the oven side by side, you can try a single larger pan or roast them in batches, but either way make sure veggies are in a single layer.)
Meanwhile, pulse 1/2 cup (64 g) pecans in a food processor until a powder forms. (Don't overmix or you'll make nut butter. If there are a few larger pieces left, that's fine.) Chop the remaining 1 1/2 cups (192 g) pecans. Place both in a small bowl.
Add the sweetener, cinnamon, and salt. Stir in the butter until the mixture is crumbly.
- When the vegetables are done roasting, remove them from the oven, but don't turn it off.
Puree the veggies in a food processor or high-power blender, until smooth. (You may need to do this in batches if they don't all fit at once). Transfer the puree into a 2 quart (1.9 L) ceramic or glass casserole dish.
- Stir the sweetener and remaining tablespoon of melted butter into the puree. Taste and adjust salt and pepper if desired.
- Smooth the top with a spoon or spatula. Sprinkle the pecan crumble topping over the casserole.
Roast the casserole in the oven for about 20 minutes, until the top is golden.
Last Step: Leave A Rating!
Serving size: 1/2 cup
Nutrition facts are provided as a courtesy. Have questions about calculations or why you got a different result? Please see our nutrition policy.
Want to save this recipe?
Create a free account to save your favorite recipes!Sign Up To Save Recipes
© Copyright Maya Krampf for Wholesome Yum. Please DO NOT SCREENSHOT OR COPY/PASTE recipes to social media or websites. We'd LOVE for you to share a link with photo instead. 🙂