Fresh Herb and Spinach Stuffed Mushrooms

By , Test Kitchen Director · 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 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.

Prep: 20 min Cook: 25 min Serves 8 American cuisine 160 cal/serving
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Ingredients

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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.

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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