Cheesy Cauliflower Mashed 'Potatoes'

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A creamy, comforting side dish that's a keto-friendly alternative to traditional mashed potatoes, made with cauliflower and sharp cheddar cheese. This american-inspired keto (vegetarian, low-carb) ready in about 35 minutes pairs unsalted butter, grated cheddar cheese, sour cream for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 25 min Serves 4 American cuisine 180 cal/serving
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Ingredients

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Instructions

  1. Step 1: Place the cauliflower florets in a large pot, cover with water, and bring to a boil over high heat. Cook for 15-18 minutes until the cauliflower is very tender when pierced with a fork.
  2. Step 2: Drain the cauliflower thoroughly in a colander, then return it to the pot. Add 2 tbsp unsalted butter, 1/4 cup grated cheddar cheese, 1/4 cup sour cream, and 1/4 tsp garlic powder.
  3. Step 3: Mash the cauliflower with a potato masher until smooth and creamy, adding a splash of the reserved cooking water if too thick. Season with 1/4 tsp salt and 1/8 tsp black pepper until the mixture is smooth and the cheese is melted.

Frequently asked questions

How long does Cheesy Cauliflower Mashed 'Potatoes' take to make?

Total time is about 35 minutes (10 min prep + 25 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Cheesy Cauliflower Mashed 'Potatoes'?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep unsalted butter from drying out.

Can I substitute ingredients in Cheesy Cauliflower Mashed 'Potatoes'?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Cheesy Cauliflower Mashed 'Potatoes' for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Cheesy Cauliflower Mashed 'Potatoes' vegetarian?

Yes — this recipe is tagged vegetarian, low-carb based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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