Cauliflower and Spinach Alfredo Pasta

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A velvety pasta dish where cauliflower puree and spinach create a creamy, nutrient-rich sauce that disappears into every bite. This american-inspired pasta ready in about 55 minutes pairs florets cauliflower, fresh baby spinach, whole milk for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 550 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.

★ 4.5 (12 ratings) Prep: 25 min Cook: 30 min Serves 4 American cuisine 550 cal/serving
Plan a meal with the AI → Order on Instacart →

Ingredients

Instructions

  1. Step 1: Steam 2 cups cauliflower florets until very tender, about 10 minutes, then blend with 1/2 cup steaming water until completely smooth.
  2. Step 2: Melt 1/4 cup butter in a saucepan over medium heat, add 2 minced garlic cloves, and sauté for 1 minute until fragrant without browning.
  3. Step 3: Stir in the blended cauliflower puree, 1 cup milk, 1/2 cup grated Parmesan, and 2 cups spinach; cook for 6-8 minutes until thickened and spinach wilts, stirring constantly.
  4. Step 4: Remove from heat, stir in 1/2 cup grated mozzarella until melted, then season with salt and pepper.
  5. Step 5: Cook 12 oz spaghetti in salted boiling water for 8 minutes until al dente, reserving 1/2 cup pasta water.
  6. Step 6: Toss drained spaghetti with the sauce, adding reserved pasta water as needed to reach a creamy consistency, until evenly coated.

Frequently asked questions

How long does Cauliflower and Spinach Alfredo Pasta take to make?

Total time is about 55 minutes (25 min prep + 30 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 Cauliflower and Spinach Alfredo Pasta?

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 florets cauliflower from drying out.

Can I substitute ingredients in Cauliflower and Spinach Alfredo Pasta?

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 Cauliflower and Spinach Alfredo Pasta 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.

What goes well with Cauliflower and Spinach Alfredo Pasta?

American pasta like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

What others are saying

Equipment for this recipe

Top-rated tools to make this recipe successfully.

More Knives & cutting boards → Shop all kitchen tools →