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Airfryfeast
Air Fryer Stuffed Portobello Mushrooms with Spinach and Feta
By Airfryfeast Test KitchenReviewed by Airfryfeast Editorial TeamPublished Mar 25, 2026 · Updated May 12, 2026
Mediterranean
25 mins
air-fryer-friendlyvegetariangluten-freehealthyeasycrispfamily-friendly30-minutes-or-lessweeknight-dinnerlow-carb
Enjoy these flavorful, gluten-free stuffed portobello mushrooms filled with spinach and feta, air fried to crispy perfection. A healthy, low-carb vegetarian main course perfect for quick and easy weeknight dinners.
Prep
10 min
Cook
15 min
Total
25 min
Servings
4
Difficulty
easy
Cuisine
Mediterranean
Ingredients
Servings
4
- 4 large portobello mushroom caps, stems and gills removed
- 2 cups fresh spinach leaves, roughly chopped
- 1/2 cup crumbled feta cheese
- 2 cloves garlic, minced
- 1/4 cup finely chopped red onion
- 2 tablespoons olive oil, divided
- 1 teaspoon dried oregano
- 1/2 teaspoon dried basil
- Salt and freshly ground black pepper, to taste
- 1/4 teaspoon red pepper flakes (optional for mild heat)
- 1 tablespoon fresh lemon juice
- 2 tablespoons grated Parmesan cheese (optional for topping)
- Non-stick cooking spray
Instructions
-
Preheat your air fryer to 375°F (190°C) for 5 minutes.
-
Brush each portobello mushroom cap on both sides with 1 tablespoon olive oil and season lightly with salt and pepper. Set aside.
-
Heat the remaining 1 tablespoon olive oil in a medium skillet over medium heat. Add the minced garlic and chopped red onion; sauté for 2-3 minutes until fragrant and translucent.
-
Add the chopped spinach to the skillet and cook until wilted, about 2-3 minutes. Stir in dried oregano, dried basil, red pepper flakes (if using), salt, and pepper.
-
Remove the skillet from heat and stir in the crumbled feta cheese and fresh lemon juice. Mix until well combined.
-
Place the mushroom caps in the air fryer basket, cavity side up.
-
Evenly spoon the spinach and feta mixture into each mushroom cap, pressing lightly to pack the filling.
-
If desired, sprinkle grated Parmesan evenly over the tops of the stuffed mushrooms for a golden, crispy finish.
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Air fry at 375°F (190°C) for 12-15 minutes, or until the mushrooms are tender and the topping is golden and slightly crisp.
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Carefully remove the mushrooms from the air fryer and let them cool for 2 minutes before serving.
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Serve warm as a satisfying main course alongside a fresh Mediterranean salad or your favorite low-carb side dish.
Frequently Asked Questions
Reader questions and answers for this recipe will appear here.
Customize your Air Fryer Stuffed Portobello Mushrooms with Spinach and Feta to fit your preferences or dietary requirements with these ingredient swaps:
- Mushrooms: Substitute large cremini or white mushrooms if portobellos aren’t available or if you prefer smaller portions.
- Spinach: Swap for kale, Swiss chard, or arugula to vary flavor and texture.
- Feta Cheese: For dairy-free or vegan diets, replace feta with seasoned crumbled tofu, nutritional yeast, or plant-based vegan feta alternatives.
- Olive Oil: Use avocado oil or melted coconut oil as healthy fat alternatives.
- Red Onion: Shallots or green onions offer a milder onion flavor if preferred.
- Parmesan (optional topping): Nutritional yeast or vegan parmesan substitutes work well to keep the cheesy, crispy topping without dairy.
- Red Pepper Flakes: Replace with cayenne pepper for more heat or omit entirely for a milder taste.
These substitutions allow you to maintain the recipe’s vegetarian, gluten-free, and low-carb qualities while adapting for vegan, dairy-free, or pantry-friendly versions.
Air Fryer Model Notes
This recipe for Air Fryer Stuffed Portobello Mushrooms with Spinach and Feta is designed as a vegetarian, gluten-free, and low-carb main course that you can prepare in under 30 minutes. Different air fryer models may vary in size, heating elements, and airflow, impacting cooking times and texture.
Basket-style compact air fryers with smaller capacity may require cooking mushrooms in batches to ensure even air circulation and a crispy finish. Larger or oven-style air fryers with multiple racks might fit all mushrooms at once; to ensure consistent browning, rotate mushrooms between racks halfway through cooking.
Some models have precise temperature controls and quicker preheat times, allowing you to reach the recommended 375°F (190°C) quickly. If your air fryer runs hotter or cooler, adjust cooking time accordingly—start checking mushroom tenderness and topping crispness at 12 minutes, extending up to 15 minutes as needed.
Use specific presets for vegetables or stuffed dishes if available but always verify doneness by testing tenderness. Lightly spray mushrooms with non-stick cooking spray before air frying to prevent sticking and achieve a beautiful golden color.
Avoid overcrowding the basket to maintain optimal crispiness on mushroom caps and the savory spinach and feta filling. Adapting cooking based on your model’s size and heat distribution ensures this family-friendly, easy, and quick Mediterranean dish turns out perfectly every time.
Crispiness Control
Perfecting the crispiness of your Air Fryer Stuffed Portobello Mushrooms enhances their Mediterranean flavors while keeping the filling tender. Consider the following tips tailored to this vegetarian, gluten-free, and low-carb main course:
- Tender Mushroom with Slightly Crispy Topping: Air fry at 375°F (190°C) for 12 minutes. Expect juicy mushrooms with a delicately golden feta and optional Parmesan crust.
- For Extra Crispy Texture: Increase cooking time to 15 minutes and add a thin layer of grated Parmesan halfway through cooking for a crunchy cheese crust without drying the mushrooms.
- Less Crisp, More Moist: Lower air fryer temperature to 350°F (175°C) and shorten cook time to about 10 minutes for soft mushrooms with a milder topping texture.
- Even Browning Tip: Brush mushroom caps with olive oil before stuffing and air frying to improve heat conduction and promote crispy edges.
- Airflow Matters: Arrange mushrooms cavity side up in a single layer without overcrowding for optimal air circulation and consistent crispiness.
Adjust these factors to suit your texture preference while maintaining the juicy, flavorful filling that makes this recipe a family-friendly Mediterranean favorite.
Reheat In The Air Fryer
Reheating your Air Fryer Stuffed Portobello Mushrooms with Spinach and Feta in the air fryer preserves their delicious texture and flavor by keeping the filling moist and re-crisping the cheesy topping without drying it out.
- Preheat air fryer to 350°F (175°C) for 3-5 minutes.
- Place leftover stuffed mushrooms in a single layer in the basket, avoiding overcrowding to ensure even heating.
- Air fry for 5-7 minutes, checking at 5 minutes to prevent overcooking. The mushrooms should be warmed through with a lightly crisped topping.
- For softer texture, reduce reheating time slightly; add 1-2 minutes for extra topping crispness, monitoring carefully.
Additional tips:
- Allow refrigerated mushrooms to come to room temperature for 10 minutes before reheating for even heat distribution.
- Lightly mist with non-stick spray or brush a teaspoon of olive oil on the mushrooms prior to reheating to prevent drying.
- Reheating in the air fryer is a quick, healthy method ideal for meal prep and maintaining a low-carb, vegetarian meal.
- Avoid using foil inside the air fryer to ensure proper hot air circulation around the mushrooms.
- Consume reheated mushrooms immediately for best taste and food safety.
What To Serve With This In The Air Fryer
These savory Mediterranean-style stuffed portobello mushrooms pair beautifully with other air fryer-friendly sides that complement their fresh, herbaceous flavors while keeping the meal light and nutritious. For a complete vegetarian meal, try pairing with:
- Air Fryer Roasted Mediterranean Vegetables: Zucchini, bell peppers, and cherry tomatoes tossed with olive oil, garlic, and herbs for a vibrant, crisp side that mirrors the mushrooms’ flavor profile.
- Air Fryer Garlic Parmesan Green Beans: Crisp green beans with garlic and Parmesan offer a crunchy, nutrient-packed option, perfect for gluten-free and low-carb dinners.
- Air Fryer Crispy Herb Potato Wedges: For a more filling side, these rosemary and sea salt-seasoned wedges provide comfort-food satisfaction without excess fat.
- Air Fryer Pita Chips with Tzatziki: This snackable option adds a cool, creamy dip to highlight the Mediterranean theme and make a great starter or side.
For a quick and family-friendly weeknight dinner, serve stuffed mushrooms alongside a fresh mixed greens salad with lemon vinaigrette (pre-made if desired) to keep the meal balanced, light, and bursting with flavor. All these options cook quickly in the air fryer, helping you prepare a satisfying, crisp Mediterranean feast in under 30 minutes.
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