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Oven Grilled Portobello Mushrooms

Mushroom Portobello grilled1

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Mushroom Portobello grilledThe portobello mushroom is a large brown mushroom. It’s immature self–a small brown mushroom–is called a crimini mushroom and sometimes baby bella.

In France, the portobello is called champignon de Paris. Champignon is the French word for fungus.

In the wild the common brown mushroom can have a cap that grows 2 to 4 inches wide. Cultivated portobellos can have caps twice that size or more since they are encouraged to mature. The portobello is a thick, meaty mushroom with a broad open cap and a woodsy aroma. You can make a meal of the portobello served alone.

You can throw the portobello on the outdoor grill during the summer and serve it just like a hamburger. The portobello can also be fried or oven roasted.

Here is a rich, buttery recipe for oven grilled Portobello. Garnish these with minced fresh parsley or chervil leaves.

Oven Grilled Portobello Mushrooms

Yield 6 servings


  • 12 portobello mushroom caps
  • ½ cup olive oil
  • ½ teaspoon salt
  • Firm butter


  1. Wash mushroom caps and drain well.
  2. Pour oil into a baking pan and heat it in a very hot preheated oven (450ºF).
  3. Add mushrooms and stir to coat them thoroughly with oil. Sprinkle with salt.
  4. Return the pan to the oven and cook 10 minutes or until the mushrooms are done.
  5. Remove mushrooms from the oven and fill the cavities with firm butter. Serve.

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Written by Stephen Albert

Stephen Albert is a horticulturist, master gardener, and certified nurseryman who has taught at the University of California for more than 25 years. He holds graduate degrees from the University of California and the University of Iowa. His books include Vegetable Garden Grower’s Guide, Vegetable Garden Almanac & Planner, Tomato Grower’s Answer Book, and Kitchen Garden Grower’s Guide. His Vegetable Garden Grower’s Masterclass is available online. has more than 10 million visitors each year.

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