Delicious Spinach and Cheese Portobello Mushrooms

Featured in Dinner Ideas That Actually Work.

Bake the portobello caps first, whip up a filling with spinach and three cheeses, stuff them, and bake until everything’s golden and bubbling.
Clare Recipes
Updated on Sat, 15 Mar 2025 02:39:46 GMT
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Spinach and Cheese Stuffed Portobello Mushroom | lilicooks.com

My love affair with these stuffed mushrooms began in my tiny apartment kitchen years ago. Each portobello cap becomes a perfect vessel for a luxurious filling of melted cheese and wilted spinach, creating an impressive dish that belies its simple preparation. The mushrooms develop a rich, meaty texture while the filling turns golden and bubbly.

These stuffed mushrooms never fail to impress, even converting steadfast vegetable skeptics. At a recent gathering, they disappeared so quickly I barely managed to save one for myself. The empty platter told me everything I needed to know about their success.

Essential Ingredients

  • Portobello mushrooms: Select firm, unblemished caps with intact rims. Larger sizes work best for stuffing.
  • Fresh spinach: Use fresh leaves rather than frozen to avoid excess moisture. Rough chop before cooking.
  • Ricotta cheese: Whole milk ricotta provides the creamiest texture and richest flavor.
  • Parmesan cheese: Freshly grated adds the perfect savory depth.
  • Nutmeg: A small amount enhances the spinach's natural flavor subtly but significantly.
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Spinach and Cheese Stuffed Portobello Mushroom Homemade | lilicooks.com

Perfect Preparation

Mushroom preparation:
Remove stems and carefully scrape out gills to maximize filling space and reduce excess moisture.
Initial roasting:
Pre-roasting the caps releases moisture and concentrates flavor.
Building flavor:
Sauté aromatics until golden before adding spinach for optimal taste.
Temperature timing:
Allow spinach mixture to cool briefly before combining with cheese.
Proper filling:
Pack filling firmly but gently into caps for ideal distribution.
Baking precision:
Monitor closely during final bake for perfectly golden cheese.

The recipe evolved through countless iterations in my kitchen. Fresh herbs from the garden transformed the basic version - thyme in spring, basil during summer months, sage when autumn arrives. Each variation brings its own special character to the dish.

Serving Suggestions

Pair with peppery arugula dressed simply in lemon and olive oil. For heartier appetites, serve over creamy polenta or alongside crusty bread. When serving as appetizers, cut into quarters for elegant portions.

Creative Variations

Experiment with different greens like tender kale or rainbow chard. Mediterranean flavors shine with chopped sun-dried tomatoes added. For meat lovers, incorporate crumbled bacon or cooked Italian sausage into the filling.

Storage Guide

Store leftovers in an airtight container for up to three days. Reheat in a 350°F oven until warmed through, about 10 minutes. The filling freezes well separately - perfect for meal planning.

Spinach and Cheese Stuffed Portobello Mushroom Recipe Pin it
Spinach and Cheese Stuffed Portobello Mushroom Recipe | lilicooks.com

From casual family meals to special occasions, these stuffed portobellos never disappoint. The combination of meaty mushrooms, creamy cheese filling, and garlicky greens creates restaurant-quality results. Their make-ahead convenience and reliable results make them a standout choice for entertaining.

Frequently Asked Questions

→ Is it possible to make these ahead of time?
Absolutely! You can prep and fill the mushrooms a day before, keep them covered in the fridge, and bake them when it’s time to eat.
→ What would go well with these mushrooms?
A green salad or roasted veggies make great sides. They’re also filling enough to serve as the main part of your meal.
→ How do I clean portobello mushrooms properly?
Use a damp paper towel or soft brush to wipe them clean. Avoid soaking them since they soak up water. Remove the stems and scrape out the gills with a spoon if needed.
→ Can frozen spinach work for this recipe?
Yes, for sure! Just make sure it’s fully thawed and you squeeze out all the water. You’ll need about half a cup of it.
→ What’s a good substitute for ricotta cheese?
Options like drained cottage cheese, cream cheese, or Greek yogurt can work in its place. Be aware, though, that each one tweaks the taste and texture a bit.

Cheesy Spinach Portobello

Big portobello caps are stuffed with a creamy mix of ricotta, spinach, and herbs, then covered in melted mozzarella. It’s a hearty vegetarian option.

Prep Time
15 Minutes
Cook Time
30 Minutes
Total Time
45 Minutes
By: Lily Chen

Category: Main Dishes

Difficulty: Intermediate

Cuisine: Italian

Yield: 4 Servings (4 stuffed mushrooms)

Dietary: Low-Carb, Vegetarian, Gluten-Free

Ingredients

→ For the Mushrooms

01 4 large portobello mushroom caps, cleaned with stems and gills scraped off
02 2 tablespoons of olive oil, split into two portions

→ For the Filling

03 1/2 cup ricotta cheese
04 1/4 teaspoon salt
05 1 teaspoon of chopped garlic
06 1/4 teaspoon freshly ground black pepper
07 1/4 cup grated Parmesan cheese (and a little extra to sprinkle on top)
08 1/4 teaspoon of nutmeg if you like it
09 1/2 a cup of mozzarella cheese, shredded
10 2 cups of fresh spinach (cut roughly)
11 1/2 cup finely diced onion

Instructions

Step 01

Set your oven to 375°F (190°C) and let it preheat. Line a tray with parchment paper. Spread olive oil on both sides of the mushroom caps, then arrange them on the tray with the gill side facing up.

Step 02

Pop the mushrooms into the oven for about 10 minutes. As they cook, they'll release some of their water, giving you a less soggy result later.

Step 03

While waiting for the mushrooms, warm the remaining olive oil in a big skillet over medium heat. Drop in the garlic and onion and cook them until soft, which should take around 3 to 4 minutes. Toss in the spinach and let it cook until it shrinks down, another 2 to 3 minutes. Take the pan off the stove and let it cool for a little bit.

Step 04

In a large bowl, combine the cooled spinach mixture with the ricotta, Parmesan, salt, pepper, and a little nutmeg if you'd like. Stir it all up really well.

Step 05

Use a spoon to fill each mushroom cap with the cheesy spinach mixture. Sprinkle mozzarella cheese over the top of each one.

Step 06

Put the stuffed mushrooms back in the oven and bake them for 15 to 20 minutes. You'll know they're done when the cheese is bubbly and has a nice golden color.

Step 07

For a finishing touch, sprinkle some extra Parmesan cheese over the top. Serve these while they’re hot, and enjoy!

Notes

  1. Taking out the gills from the mushrooms gives you more space to add the filling and also keeps the dish from getting too dark in color.

Tools You'll Need

  • Tray for baking
  • Parchment paper
  • Large cooking pan
  • Mixing bowl

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Includes dairy ingredients like mozzarella, Parmesan, and ricotta