One-Pot Mushroom and Spinach Pasta with Lemon Zest

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

A simple weeknight dinner with tender pasta coated in a garlicky mushroom sauce, brightened with fresh lemon and spinach. This italian-inspired pasta ready in about 40 minutes pairs spaghetti, olive oil, medium, finely diced onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 520 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: 15 min Cook: 25 min Serves 4 Italian cuisine 520 cal/serving
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Ingredients

Instructions

  1. Step 1: Bring a large pot of salted water to a rolling boil, adding 1 tsp salt. Add 12 oz spaghetti and cook for 8-10 minutes until al dente, then drain and reserve 1/2 cup pasta water.
  2. Step 2: Heat 2 tbsp olive oil in a large skillet over medium heat. Add 1 medium onion, finely diced, and cook for 5 minutes until soft, then add 3 garlic cloves minced and cook for 1 minute until fragrant.
  3. Step 3: Add 8 oz sliced cremini mushrooms to the skillet and cook for 5 minutes, stirring occasionally, until golden and moisture evaporates.
  4. Step 4: Stir in 1 cup vegetable broth and 1/2 cup heavy cream, bringing to a gentle simmer. Add 2 cups fresh spinach and cook until wilted, about 2 minutes.
  5. Step 5: Add drained spaghetti to the skillet with 1/2 cup reserved pasta water, 1/4 cup grated Parmesan cheese, and zest of 1 lemon. Toss vigorously for 2 minutes until sauce coats pasta, adding more pasta water if needed.
  6. Step 6: Stir in juice of 1 lemon, 1/2 tsp salt, and 1/4 tsp black pepper. Serve immediately.

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Frequently asked questions

How long does One-Pot Mushroom and Spinach Pasta with Lemon Zest take to make?

Total time is about 40 minutes (15 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 One-Pot Mushroom and Spinach Pasta with Lemon Zest?

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 spaghetti from drying out.

Can I substitute ingredients in One-Pot Mushroom and Spinach Pasta with Lemon Zest?

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 One-Pot Mushroom and Spinach Pasta with Lemon Zest 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 One-Pot Mushroom and Spinach Pasta with Lemon Zest?

Italian 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.

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