Ingredients:

  • 1 lb Cremini or Baby Bella mushrooms, cleaned and halved
  • 1 small yellow onion, sliced into 1/2-inch wedges
  • 2 tbsp extra virgin olive oil
  • 1 tbsp balsamic vinegar
  • 1 tbsp soy sauce
  • 1 tsp garlic powder
  • 0.5 tsp dried thyme or rosemary
  • 0.25 cup grated Parmesan cheese
  • 2 tbsp fresh parsley, finely chopped
  • 0.25 tsp flaky sea salt
  • 0.25 tsp cracked black pepper

Instructions:

  1. Clean mushrooms with a damp paper towel to remove debris. Avoid soaking in water. Slice large mushrooms into uniform halves or quarters for even cooking.
  2. In a large mixing bowl, whisk together the extra virgin olive oil, balsamic vinegar, soy sauce, garlic powder, and dried herbs.
  3. Add the prepared mushrooms and onion wedges to the bowl. Toss thoroughly until the vegetables are glossy and evenly coated in the marinade.
  4. Preheat the air fryer to 400°F (200°C).
  5. Arrange the mushrooms in a single layer in the air fryer basket. Do not crowd the basket to ensure proper airflow and crisping.
  6. Cook for 10–12 minutes. At the 6-minute mark, shake the basket vigorously to ensure all sides achieve a mahogany-colored browning.
  7. Remove from the air fryer and immediately toss with grated Parmesan, fresh parsley, flaky sea salt, and black pepper.