Ultra-smooth, creamy cauliflower mashed potatoes make a flavorful, lower-carb alternative to traditional mashed potatoes. They work beautifully as a quick weeknight side or as part of a holiday menu—rich, tangy, and satisfying without the heaviness of regular potatoes.
This recipe features roasted cauliflower seasoned with onion, garlic, olive oil, salt, and pepper, then pureed with broth, sour cream, Greek yogurt, and butter until silky smooth. Roasting concentrates the flavor and reduces excess moisture, which prevents a watery mash and gives a deeper, caramelized taste. If you prefer a milder, less roasted flavor, you can boil the cauliflower, but we recommend roasting for best texture and aroma.
What You Need for Cauliflower Mashed Potatoes
- Cauliflower roasted with onion, garlic cloves, olive oil, salt, and pepper
- Broth (vegetable or chicken broth works well)
- Sour cream and plain Greek yogurt for tang and creaminess
- Butter for richness and flavor
Substitutions and Variations
You can easily customize these mashed cauliflower potatoes to suit your taste or dietary needs. Try one of these common variations:
Roasted vs. Boiled: Roasting the cauliflower with olive oil, onion, and garlic creates deeper flavor and helps remove excess moisture. If you boil instead, drain and pat the cauliflower dry before blending to avoid a thin, watery mash.
Vegan/Dairy-Free: Swap in dairy-free sour cream, non-dairy yogurt, and plant-based butter to make a vegan version that still feels creamy and indulgent.
Dairy Options: The combination of sour cream, Greek yogurt, and butter gives the mash a perfect balance of tang and richness.
- For a lighter texture, use plain Greek yogurt in place of the sour cream.
- For a richer result, use all sour cream or increase the butter slightly.
More of our favorite recipes for the season
Healthy Thanksgiving Recipes
If you’re planning a holiday spread, pair these mashed cauliflower potatoes with roasted turkey, glazed ham, or any of your favorite seasonal mains and sides. They make a wonderful, vegetable-forward alternative to traditional mashed potatoes.
FAQ
No. The recipe contains no potatoes—only cauliflower prepared to mimic the texture and comfort of classic mashed potatoes while cutting carbs and calories.
Yes, boiled cauliflower will work, but roasting produces more depth of flavor and a better texture. If you boil, be sure to drain and dry the florets before blending.
That depends on personal preference. For a thicker mash, use less broth and pulse when blending to keep some texture. For a smoother, thinner mash, add broth one tablespoon at a time until you reach your desired consistency.
Storage
These cauliflower mashed potatoes store well and make a convenient make-ahead side. Allow the mash to cool to room temperature, then transfer to an airtight container and refrigerate for up to 5 days.
Reheat gently on the stove over low to medium heat, stirring occasionally. Add a splash of broth or milk to loosen the mash if it becomes too thick while reheating.
Freezing is not recommended; the texture changes unfavorably after thawing.
More holiday side dish ideas
Holiday Side Dishes
- Healthy sweet potato casserole
- Mashed sweet potatoes
- Green bean casserole with crunchy onions
- Garlic-glazed carrots
- Cornbread dressing
- Roasted root vegetables
Serving Suggestions
Cauliflower mashed potatoes complement a wide range of main dishes. Serve them anywhere you would normally serve classic mashed potatoes for a lighter, vegetable-forward option.
Weeknight mains: pair with baked lemon chicken, pork loin, crispy baked chicken thighs, spinach-stuffed chicken breast, or meatloaf.
Holiday mains: serve alongside roasted turkey, smoked ham, turkey tenderloin, a savory mushroom gravy, roasted sweet potatoes, or stuffing.
Cauliflower Mashed Potatoes Recipe
Rich, creamy, and low in carbs, this mashed cauliflower makes an excellent side for everyday dinners and special occasions alike.
Ingredients (serves 6)
- 1 medium head of cauliflower, chopped
- 1/2 medium white onion, chopped
- 8 cloves garlic, peeled and smashed
- 2 tablespoons olive oil
- 1/8 teaspoon salt (adjust to taste)
- 1/8 teaspoon pepper (adjust to taste)
- 1/3 cup broth (vegetable or chicken)
- 1/3 cup sour cream
- 1/4 cup plain Greek yogurt
- 2 tablespoons unsalted butter, plus extra for serving
- Cracked black pepper and chopped parsley for garnish
Instructions
- Preheat the oven to 400°F (200°C). Line a baking sheet with foil and lightly grease it or spray with nonstick spray.
- Spread the chopped cauliflower, chopped onion, and smashed garlic on the baking sheet. Drizzle with olive oil and season with salt and pepper. Toss to coat evenly.
- Bake for 35–40 minutes, stirring once halfway through. Roast until the cauliflower is tender and golden in spots.
- Transfer the roasted cauliflower, onion, and garlic to a high-speed blender or food processor. Add the broth, sour cream, Greek yogurt, and butter.
- Blend until smooth. If the mixture is too thick, add more broth one tablespoon at a time until you reach your preferred consistency.
- Adjust seasoning to taste, then transfer to a serving bowl. Top with an extra pat of butter, freshly cracked black pepper, and chopped parsley.
Tips & Notes
- Storage: Cool completely before refrigerating. Store in an airtight container for up to 5 days. Reheat gently on the stove and add a little broth if needed.
- Broth: Any broth works—use vegetable broth for a vegetarian dish or chicken broth for extra savory depth.
- Texture: Use pulsing for a chunkier mash or blend fully for a silken puree. Add broth gradually to control thickness.
Nutrition (approximate per serving)
Calories: 165 kcal • Carbohydrates: 11 g • Protein: 7 g • Fat: 11 g • Fiber: 4 g • Sugar: 5 g
Nutrition information is estimated and should be used as an approximation.