Add olive oil to a large skillet over medium-high heat. Add onions and garlic and cook until vegetables are softened, about 3 minutes.
Add mushrooms, spinach, feta cheese, Parmesan cheese, oregano, salt, and pepper. Cook until the spinach is wilted and the cheese is melted, about 5 minutes.
Transfer the mixture to an air fryer-safe dish. Air-fry for 10 minutes.
Serve warm.
Interesting Facts
This dish is a great way to get your daily dose of vegetables.
Air-frying is a healthier alternative to deep-frying as it uses less oil.
Feta cheese is a type of cheese that is traditionally made from sheep’s milk.