Spinach Stuffed Portobellos

Featured in Snacks and Bites Everyone Loves.

Want an easy veggie side? These portobello mushrooms are the answer. Marinate them, stuff with garlicky spinach and feta, then bake! They’re tender, flavorful, and gluten-free. Cook ahead if needed—just reheat before serving.
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Updated on Sun, 30 Mar 2025 00:21:37 GMT
Spinach Stuffed Portobello Mushrooms with Feta Pin it
Spinach Stuffed Portobello Mushrooms with Feta | mecooking.com

Earthy portobello mushrooms make a fancy base when stuffed with bright spinach and smooth feta cheese. This dish, with roots in Mediterranean cooking, blends hearty mushrooms, green leaves, and sharp cheese in a way that just works, giving you a meal that's good for you and tastes amazing too.

I stumbled on this dish at a friend's dinner when I needed something tasty for vegetarians. Everyone went crazy for these stuffed mushrooms and asked me how to make them before they left.

Stellar Ingredient Picks

  • Portobello Mushrooms: Go for ones that feel solid with no spots and tight gills underneath
  • Extra Virgin Olive Oil: Don't skimp here—good oil makes the marinade pop
  • Fresh Spinach: Grab bunches with perky, green leaves for the best results
  • Feta Cheese: The stuff from Greece gives you the creamiest, tangiest flavor
  • Fresh Garlic: Pick bulbs that feel heavy and have snug cloves
  • Balsamic Vinegar: The darker ones pack more punch in your dish

Cooking Directions

Getting Mushrooms Ready:
Wipe caps with a damp towel instead of washing them. Pull stems out carefully to keep caps whole. Stir marinade parts together well. Let mushrooms soak up all those tasty flavors.
Making The Filling:
Heat your oil till it looks shiny. Cook minced garlic till it smells good and turns light brown. Drop in spinach bit by bit, letting each bunch shrink down. Add a pinch of salt and pepper to taste.
Putting It Together:
Place caps on your baking sheet with gills facing down. Bake them first till they release some juice. Empty out this liquid completely. Pack each cap full with your spinach mix.
Last Cooking Step:
Sprinkle feta chunks over filled mushrooms. Bake till cheese gets slightly golden. Let them cool a bit before you dig in.
Fresh Stuffed Portobello Mushrooms with Spinach and Feta Pin it
Fresh Stuffed Portobello Mushrooms with Spinach and Feta | mecooking.com

In my Mediterranean family, we always knew feta could turn plain veggies into something special. My folks really like how the cheese gets a bit golden and tastes even better after it's been in the oven.

Tasty Side Matches

These fancy mushrooms go great with lots of things. Try them next to herby quinoa, roasted veggies, or a simple arugula salad with lemon dressing. If you want something heartier, they're awesome with grilled chicken or fish too.

Yummy Twists

You can switch things up by using different cheese like goat cheese or mozzarella instead. Throw in some sun-dried tomatoes or pine nuts for crunch and extra flavor. If you don't do dairy, swap the feta for some cashew cheese or nutritional yeast.

Storage Tips

You can put together these mushrooms and keep them uncooked in a sealed container for a day. If you've already cooked them, they'll stay good in your fridge for about 3 days. Just warm them up in a 350°F oven for around 10 minutes.

Close-up Stuffed Portobello Mushrooms with Spinach and Feta Recipe Pin it
Close-up Stuffed Portobello Mushrooms with Spinach and Feta Recipe | mecooking.com

I've made this dish so many times over the years, and it's never let me down when I want to impress someone. There's something about the mix of meaty mushrooms, garlicky spinach, and salty feta that feels fancy but comforting at the same time.

Frequently Asked Questions

→ Can I prep these mushrooms early?
Sure! Make them 2-3 days in advance. Use an airtight container and reheat at 350°F for around 10-15 minutes.
→ Do I take out the mushroom gills?
Nope, removing the gills isn’t needed. Just be gentle while taking out the stems to keep the caps intact.
→ What pairs well with these mushrooms?
They’re awesome alongside grilled meats, with quinoa or rice for a veggie meal, or as a party appetizer.
→ Can I swap the feta for another cheese?
Absolutely! Goat cheese, parmesan, or mozzarella all work. Each gives its own unique flavor.
→ Are these mushrooms gluten-free?
Yes, everything here is naturally gluten-free since there’s no flour or bread involved.

Stuffed Mushrooms Spinach Feta

Portobello mushrooms are stuffed with a mix of garlicky spinach and feta cheese for a quick, tasty vegetarian side or appetizer.

Prep Time
10 Minutes
Cook Time
40 Minutes
Total Time
50 Minutes
By: Mariana


Difficulty: Intermediate

Cuisine: Global

Yield: 2 Servings (2 filled mushroom caps)

Dietary: Low-Carb, Vegetarian, Gluten-Free

Ingredients

→ Core Ingredients

01 4 finely minced garlic cloves
02 3 cups roughly chopped fresh spinach
03 2 large caps of portobello mushrooms
04 3 tablespoons feta cheese, crumbled

→ Flavoring & Marinade

05 3 tablespoons plus 1/4 cup olive oil, separated
06 A little sage (dried)
07 Some balsamic vinegar (1 tablespoon)
08 Dash of garlic powder
09 Taste with salt and freshly cracked black pepper

Instructions

Step 01

Preheat the oven to 400°F. Carefully take out the stems from the mushrooms without damaging the caps. Combine balsamic vinegar with 1/4 cup olive oil, stir in a sprinkle of sage and garlic powder. Allow the mushroom caps to soak while you prep everything else.

Step 02

Chop up the spinach roughly, tossing out any tough stems. Keep the garlic minced and handy.

Step 03

In a pan, add 3 tablespoons of olive oil and let garlic gently brown for around 3 minutes. Pour in chopped spinach and stir occasionally as it wilts for about 5 minutes. Season it lightly with salt and pepper, tasting as you go.

Step 04

On a baking tray, arrange the seasoned mushroom caps with the gills touching the sheet. Bake these for 10 minutes.

Step 05

Turn the roasted caps over and pour out any collected liquid. Load the centers with the garlic spinach mix and sprinkle the feta cheese (roughly 1.5 tablespoons per cap) on top. Pop the tray back into the oven for another 20 minutes, letting the toppings get nice and bubbly.

Notes

  1. Seal in an airtight container, and these will stay fresh up to 3 days.
  2. For reheating, place them in a 350°F oven for 10 to 15 minutes until steaming.

Tools You'll Need

  • Good knife and cutting board
  • Medium frying pan
  • Mixing bowl (medium)
  • Glass or foil-covered baking tray
  • Wooden spoon for stirring

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Has dairy (feta cheese)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 103
  • Total Fat: 5 g
  • Total Carbohydrate: 9 g
  • Protein: 7 g