Fresh Herb and Spinach Stuffed Mushrooms

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Plump mushrooms filled with a savory mixture of spinach, herbs, and Parmesan, baked to golden perfection for a healthy and flavorful side dish. This american-inspired vegetarian (vegetarian) ready in about 45 minutes pairs large (12 oz) button mushrooms, chopped fresh spinach, minced garlic for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 160 calories and feeds 8, 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.

★ 3.6 (11 ratings) Prep: 20 min Cook: 25 min Serves 8 American cuisine 160 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F (190°C). Remove stems from mushrooms and finely chop. Set aside.
  2. Step 2: In a large bowl, combine chopped stems, spinach, garlic, thyme, parsley, Parmesan, olive oil, egg, salt, and pepper. Mix until well combined.
  3. Step 3: Stuff each mushroom cap generously with the mixture, pressing gently to ensure it holds. Place on a baking sheet lined with parchment paper.
  4. Step 4: Bake for 20-25 minutes until mushrooms are tender and filling is golden brown. Let cool slightly before serving.

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Frequently asked questions

How long does Fresh Herb and Spinach Stuffed Mushrooms take to make?

Total time is about 45 minutes (20 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 Fresh Herb and Spinach Stuffed Mushrooms?

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 chopped fresh spinach from drying out.

Can I substitute ingredients in Fresh Herb and Spinach Stuffed Mushrooms?

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 Fresh Herb and Spinach Stuffed Mushrooms for a different number of people?

The recipe is written for 8 servings. Multiply each ingredient by (your serving target / 8). 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 Fresh Herb and Spinach Stuffed Mushrooms vegetarian?

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

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