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Roasted portobello mushrooms on plate
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5 from 2 votes

Roasted Portobello Mushrooms (oil-free)

These roasted portobello mushrooms are tender, juicy, and very concentrated in flavor. They work well in a buddha bowl, a salad, or even on their own. And the recipe couldn’t be simpler.
Prep Time4 minutes
Cook Time16 minutes
Total Time20 minutes
Course: Main Course, Side
Cuisine: American
Servings: 2
Author: Thomas

Ingredients

  • 2 portobello mushroom caps
  • salt (optional) to taste
  • ground black pepper (optional) to taste
  • lemon juice (optional) to taste

Instructions

  • Preheat oven to 450F (or 425F if using convect).
    If using air fryer, preheat to 390F (or highest, if lower than 390F).
  • When preheating, gently rinse the mushrooms and rub any dirt spots away with a paper towel. Trim the stems as needed so that the mushrooms will sit flat when gills-side down.
  • If using an oven: once the oven is preheated, place the mushrooms on a lined baking sheet, gills-side down, into the oven.
    Bake for 10 minutes. Carefully flip the mushroom caps so that they are gills-side-up (like a bowl). Bake again for 10-12 minutes.
  • If using an air fryer: after the air fryer has preheated for 4 minutes, place the mushrooms in the air fryer basked gills-side down.
    Air fry for 8 minutes at 390F. Carefully flip the mushroom caps so they are gills-side-up (like a bowl). Air fry for 8 more minutes.
  • Remove the mushrooms when they are cooked through (if you're unsure, slice a piece and taste it. The mushroom should be tender and juicy.
  • Slice and season the mushroom caps with salt, pepper, and lemon juice (if using) right before serving.