Roasted Portobello Mushrooms

Roasted portobellos are one of the easiest and tastiest ways to add veggies into everyday meals. They’re a great meat alternative while also being a great additive to classic meat-based dishes like fajitas, tacos, and even lasagna. 

Why We Love this Recipe

Roasted portobello mushrooms are easy to make, flavorful, and a great way to get more veggies in your meals. Their meaty texture and ability to soak up all kinds of flavor makes them ideal for throwing onto salads, pasta, pizza and more. 

Plus, we tested a variety of roasting techniques and landed on the method that creates the ideal texture and flavor. A few important steps include removing the gills of the mushrooms, roasting gill-side up for most of the time then flipping and finishing them upside down for a just a few minutes.

Ingredients Needed for This Recipe 

The ingredient list couldn’t be simpler! 

Portobello Mushrooms

If you can, purchase mushrooms from the bulk bin—that way you can choose the freshest mushrooms. When buying mushrooms, steer clear of any mushrooms that are moist or slimy. Mushrooms should be mildly damp and springy, they should not be mushy or spongey.

Olive oil

I prefer extra-virgin olive oil for its flavor, but you can also use avocado oil or vegetable oil. 

Kosher salt and Black Pepper

I prefer kosher salt in cooking but sea salt will also work well here. If you like things spicy, consider using cayenne or red pepper flakes instead of black pepper. 

Step-By-Step Instructions for this Recipe

1. Clean the mushrooms by wiping them down with a damp paper towel to remove and brush away any dirt.
2. Remove the stems and scrape out gills.
3. Rub oil all over the mushroom caps. 
4. Season the gill side with salt and pepper.
5. Arrange mushrooms on a baking sheet, gill side up, and roast until tender and beginning to brown. 
6. Flip the mushrooms, discarding any accumulated liquid from the caps, and continue to roast until browned, 5 minutes more. 

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Flavor Variations to Try

For each of these variations, sprinkle the herb or seasoning over the mushrooms prior to roasting.  

• Sliced fresh garlic 
• Thyme 
• Rosemary 
• Taco seasoning 
• Za’atar seasoning

How to Use Roasted Portobello Mushrooms

1. As a filling for a veggie sandwich.
2. As a layer in homemade lasagna. 
3. Cut into thick slices and arrange over a caesar salad.
4. Chop and fold into a grain pilaf with winter herbs.
5. Thinly slice and serve over a creamy alfredo pasta. 
6. Chop and use as a pizza topping.
7. Slice and serve as a taco filling. 
8. Use as the “meat” in fajitas. 
9. Stuff into a burrito.
10. Serve between two toasted buns and all the fixins as a vegetarian burger. 
11. Serve as a side dish drizzled with balsamic vinegar and basil.
12. Season with soy sauce and serve over rice.
13. Make stuffed mushrooms!
14. Slice and drizzle with lemon juice, chopped fresh herbs, and grated Parmesan.
15. Slice and top with chopped shallot and thyme or rosemary.

FAQs & Expert Tips on Roasting Portobello Mushrooms 

More Mushroom Recipes to Try

• Hungarian Mushroom Soup
• Stuffed Portobello Mushrooms with Beef and Cheese
• Vegetarian Mushroom Lasagna

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