These cauliflower mashed potatoes are just as smooth and creamy as classic ones! Ready in 20 minutes, they're a delicious, easy low carb side dish.
Don’t tell Jack, but we probably won’t have classic mashed potatoes at Thanksgiving this year. I’m planning to make these cauliflower mashed potatoes instead!
That’s because we’re celebrating with his parents, who eat a low carb diet. I wanted to create a rich, creamy alternative to mashed potatoes that everyone at the table would enjoy, and after testing and tweaking this recipe, I think it’s going to be perfect.
These cauliflower mashed potatoes are smooth, creamy, and flavorful, made with Parmesan cheese, butter, garlic, and sour cream. I won’t tell you that they taste exactly like potatoes (they do have a bit of a cauliflower flavor), but they are so delicious that I think any potato fan would love them.
Serve them for your holiday dinner this year, or make them for a tasty weeknight side dish. These easy cauliflower mashed potatoes are ready in 20 minutes!
Cauliflower Mashed Potatoes Ingredients
Here’s what you’ll need to make this recipe:
- Cauliflower, of course! It makes up the base of this light and creamy mash. I typically use one large or two small heads of cauliflower here, but I think frozen florets would work well too!
- Parmesan cheese – It adds savory, nutty flavor.
- Sour cream – Jack loves his regular mashed potatoes with sour cream, so I figured it would be a hit in these cauliflower mashed potatoes as well. 🙂 It makes them ultra-creamy and adds rich, tangy flavor. I haven’t tried it, but I think cream cheese would also work.
- Butter – For extra richness.
- Fresh garlic and chives – They add sharp, savory bite. You’ll blend the garlic into the cauliflower and use the chives for garnish.
- And salt and pepper – To make all the flavors pop!
Find the complete recipe with measurements below.
How to Make Cauliflower Mashed Potatoes
You can find the complete recipe with measurements at the bottom of this post, but for now, here’s a quick overview of how it goes:
Start by boiling the cauliflower. Break or cut the cauliflower into large florets and boil it in a large pot of salted water until knife-tender, about 10 minutes.
Then, blend. Drain the cauliflower and transfer it to a food processor. Add the Parmesan, sour cream, butter, garlic, salt, and pepper and pulse until smooth.
Season to taste and serve! So easy. 🙂
FAQ: Can I use a potato masher?
I don’t recommend using a potato masher for this recipe. The cauliflower will have a slightly chunky texture that’s just not as appealing as the super-smooth mash you get in a food processor. If you don’t have a food processor, an immersion blender could work here too.
What to Serve with Cauliflower Mashed Potatoes
- On top: I love these creamy cauliflower mashed potatoes topped with butter and chives! They’d be great with my mushroom gravy too.
- Alongside: For a holiday meal, serve this recipe with classic dishes like green bean casserole, cranberry sauce, and roasted Brussels sprouts. Or pair it with a simply cooked protein for an easy weeknight dinner.
How to Store and Reheat
Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, warm them in the microwave or covered in a 350°F oven.
I don’t recommend freezing this recipe—the texture can change when it thaws.
More Favorite Cauliflower Recipes
If you love this recipe, try one of these easy cauliflower dishes next:
- Mashed Cauliflower (a different mashed cauliflower recipe with roasted garlic and less dairy!)
- Cauliflower Rice
- Cauliflower Fried Rice
- Roasted Cauliflower

Cauliflower Mashed Potatoes
Ingredients
- 1 large cauliflower, about 2 pounds 4 ounces, broken into large florets
- ½ cup freshly grated Parmesan cheese
- ¼ cup sour cream
- 1 tablespoon unsalted butter, plus more for serving
- 2 garlic cloves, grated
- ½ teaspoon sea salt
- Freshly ground black pepper
- Chopped fresh chives, for garnish
Instructions
- Bring a large pot of salted water to a boil. Boil the cauliflower until knife-tender, about 10 minutes.
- Drain and transfer to the bowl of a food processor. Add the Parmesan, sour cream, butter, garlic, salt, and several grinds of pepper and process until creamy, light, and smooth, stopping and scraping the sides and bottom of the bowl with a spatula as necessary.
- Season to taste and serve topped with more butter and chives.









Sorry to ask but I haven’t made this yet and reading the comments I see roasted garlic is used. I can’t see where this is mentioned above?
These cauliflower mashed potatoes sound like the perfect creamy and cozy low-carb side for the holidays!
These look so great! do you think i could make it with riced cauliflower instead of whole?
Hi Shelby, yes, I think that would work fine.
Oh my goodness!!! These are incredible!! Eating them right now and loving every bite. This pregnant mama is happy! Definitely love mashed potatoes, but steer clear of them because they are so carb heavy, but this is the perfect alternative. I honestly can’t even tell there is cauliflower in the recipe. Adding this to my favorite recipes!
Hi Brette, thanks for this sweet comment! I’m so glad you loved the recipe!
I would like to make this the day ahead of Thanksgiving and reheat it in my crockpot – any tips about time,settings and how to avoid it turning runny?
Hi Nancy, I don’t have a crockpot, so I’m not sure what the settings are exactly – I would heat them until warmed through and then is there a warming setting to keep them warm until ready to serve? They shouldn’t be runny. If they’re dry at all the next day, you can stir in a touch of water or a little more oil.
Thank you so much for this yummy recipe. No one knew it was cauliflower until I told them. I used the left overs to make Shepard Pie and that meal was so light but filling. I will definitely be making these again.
was looking for a recipe using my least favourite veg – cauliflower.. and one that omits dairy and finally found this! Tried this for dinner and it was AWESOME! Thank you guys! Tried it with dried rosemary, as it’s not so easily available where we are. The taste was still great that my niece made sure there was nothing left in the bowl. Super fluffy, super yummy! Thank you!
Ha, I’m glad your family loved it!
Made this recipe for Thanksgiving and it was soo good! Just what I wanted. I added no milk or butter but it tasted rich and creamy. Thanks you for this wonderful recipe! <3