How do I keep this recipe from turning soggy?

Cook in a single layer, leave space for airflow, and avoid adding too much oil or sauce before the food has crisped.

Can I adjust the seasoning?

Yes. Keep the same cooking method and adjust salt, spice, herbs, citrus, or sauce to match your taste.

Air Fryer Stuffed Portobello Mushrooms with Spinach and Feta

Name: Air Fryer Stuffed Portobello Mushrooms with Spinach and Feta
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Yield: 4 servings
Cuisine: Mediterranean
Ingredients: 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

By AirFryFeast Editorial TeamPublished Mar 25, 2026 | Updated Jun 16, 2026

Enjoy these flavorful stuffed portobello mushrooms filled with spinach and feta, air fried to crispy perfection. A main course perfect for quick and easy weeknight dinners.

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Air fryerMediterraneanEasyAir Fryer Friendly

Prep Time10 mins

Cook Time15 mins

Total Time25 mins

Servings4

Temperature375°F / 190°C

Ingredients

Servings4

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.
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.
Carefully remove the mushrooms from the air fryer and let them cool for 2 minutes before serving.
Serve warm as a satisfying main course alongside a fresh Mediterranean salad or your favorite side dish.

Recipe guidance

Crispiness Control

Pat the portobello mushroom caps dry, avoid crowding, and use only a light coat of oil or sauce before cooking. Add wet sauces near the end when you want the outside to stay crisp.

Storage

Store leftover Air Fryer Stuffed Portobello Mushrooms with Spinach and Feta in an airtight container in the refrigerator for up to 3 days. Cool the food before sealing so excess steam does not soften the texture.

FAQ

Can I make Air Fryer Stuffed Portobello Mushrooms with Spinach and Feta ahead of time?: You can prep the ingredients and seasoning ahead, but air fry close to serving for the best texture.
How do I keep this recipe from turning soggy?: Cook in a single layer, leave space for airflow, and avoid adding too much oil or sauce before the food has crisped.
Can I adjust the seasoning?: Yes. Keep the same cooking method and adjust salt, spice, herbs, citrus, or sauce to match your taste.