How to Grill Portobello Mushrooms

If you are a vegetarian or want to venture into the world of plant-based diets, you can still enjoy a meaty taste and texture with grilled portobello mushrooms.

The hearty fungi have become a popular and flavorful choice for their unique meaty texture. Their wide caps have a rich, earthy, and satisfying flavor. Besides, they hold up well to high heat and develop a delicious charred exterior while remaining juicy on the inside when grilled.

So, fire up your grill, and let’s explore how to grill portobello mushrooms like a famous chef!

Get Your Portobello Mushrooms Ready for Grilling

The first step when grilling portobello mushrooms for a mouthwatering culinary experience is getting them ready. Today, I will guide you through the crucial steps involved when preparing portobello mushrooms for grilling, whether they will be the main dish or the star of your side dish.

  1. Choose fresh and firm mushrooms. The quality of the mushrooms greatly impacts the final results. You want to use fresh mushrooms with a robust flavor profile and texture. They also absorb seasonings better and hold up well to the heat. Look for mushrooms that are firm to the touch and appear smooth and intact. Avoid mushrooms that appear discolored, wrinkled, or have obvious signs of decay.
  2. Remove the stems. To do this, hold the stem’s base and gently twist it to separate it from the cap. You may also cut them off with a small, sharp paring knife.
  3. Remove the gills. Gills are dark, ribbed structures found beneath the mushroom caps. Although edible, some people prefer to remove them for a cleaner appearance and uniform texture. Gently scrape them out from underneath the mushroom cap using a spoon or small knife. Start at the center and work your way toward the outer edge.
  4. Clean the mushrooms. Rinse them with running water to get rid of dirt and loose gills. You can also wipe them down with a damp cloth and pat them dry with a clean kitchen towel or paper towel. Excess moisture causes the mushrooms to become soggy when grilled, so this is the preferred way to clean them.
  5. Marinate or season the portobello mushrooms. With the caps cleaned and the gills removed, it provides a uniform surface for the mushrooms to absorb the seasonings you use. There is a wide range of veg seasonings that go well with portobello mushrooms.

You can apply the seasonings to the mushrooms shortly before grilling them, or you can marinade them for at least 30 minutes or up to a few hours for more intense flavors.

Grilling Techniques for Portobello Mushrooms

Portobello mushrooms on grill grates

There are two primary techniques for grilling portobello mushrooms: directly or indirectly. Direct grilling involves placing the mushrooms directly over a heat source. It’s a quick cooking method that achieves a smoky, charred exterior while maintaining a juicy and tender interior.

On the other hand, indirect grilling involves placing the portobello mushrooms away from the heat source. This method is slower and more controlled, allowing the mushrooms to cook evenly and develop a tender texture. However, you may not achieve charring or significant smokiness.

Below is how to grill portobello mushrooms using both of the methods.

Direct Grilling

  1. Preheat the grill to 375-450°F, the recommended temperature for grilling portobello mushrooms. Preheating allows for even cooking and ensures that the mushrooms char perfectly.
  2. Oil the grates. It prevents the mushrooms from sticking and enhances their flavor and the caramelization process.
  3. Arrange the seasoned mushrooms with the cap side down on the grates for better heat penetration.
  4. Cook for 4-6 minutes per side. The exact grilling time your mushrooms need varies depending on their size and how do you want them to be. Monitor them closely to avoid overcooking or burning them. Aim for an internal temperature of 160°F.
  5. Occasionally flip the mushrooms with tongs or a spatula to ensure even cooking on both sides. You may also baste with a marinade each time you flip them. Basting enhances their flavor and adds moisture.
  6. Once done, remove from the grill and serve.

Indirect Grilling

  1. Start by creating a two-zone fire or using a grill with indirect heat capabilities. If using a gas grill, turn on the burners on one side to desired temperatures and leave the burners on the other side off. This creates a hot zone and a cooler zone. If you use a charcoal grill, arrange lit charcoal briquettes on one side and leave the other side empty. When using an electric grill, preheat one side to a higher temperature and the other to a lower temperature.
  2. Position the mushrooms away from direct heat, cap side up. Close the grill lid to create a more controlled cooking environment.
  3. Set the appropriate cooking time for portobello mushrooms according to the size of the mushrooms and the type of grill. Larger mushrooms take longer to cook than smaller ones. Also, electric grills may take slightly longer than other grill types. It typically takes 15-20 minutes for the mushrooms to reach an internal temperature of 160°F.
  4. Baste the mushrooms with marinade for enhanced flavor, or add wood chips for a smoky flavor.
  5. Once done, remove your mushrooms from the grill and serve.

Bringing Grilled Portobello Mushrooms to the Next Level

Grilled portobello mushrooms and red peppers on a white plate

Grilled portobello mushrooms are delicious on their own. However, you can take them to the next level by adding additional toppings and fillings. Below are some ideas:

  • Try cheese toppings, fresh herbs, or balsamic vinegar.
  • Stuff your mushrooms with chopped veggies
  • Use sauces and condiments like tahini, chipotle sauce, garlic aioli, pesto, or a hot sauce.

You could also incorporate them into other recipes, for example:

  • Portobello mushroom burger
  • Portobello mushroom steaks
  • Grilled portobello mushroom salad
  • Grilled portobello mushroom sandwich
  • Assorted grilled portobello mushroom skewers
  • Portobello mushroom pizza
  • Assorted vegetables or stir-fry

Frequently Asked Questions (FAQs)

Do you flip portobello mushrooms when grilling?

Yes. If grilling portobello mushrooms directly, flipping them when grilling ensures even cooking and allows both sides to achieve the desired texture or flavor.

How do you know when portobello mushrooms are done on the grill?

Look out for visual signs of doneness, such as slight char or grill marks on the surface. The caps should have a rich brown color. Then, gently prod with a fork or knife; they should be soft and easily pierced. You may also check for doneness using a meat thermometer to see if you have an internal temperature of 160°F.

Do you remove gills from portobello mushrooms before grilling?

Removing gills from portobello mushrooms is a matter of personal preference. The gills are edible and have a unique flavor. However, some people prefer to remove them for a cleaner presentation, better infusion of the marinades, and even cooking.


Grilled portobello mushrooms are a must-have in your vegetarian cooking, especially if you are craving meaty flavors or textures. They are generally easy to grill, and I have shared some of my best tips for achieving optimal results.

Start by choosing fresh and firm mushrooms, remove their gills and stems, and clean and dry them. Season or marinate them for added flavor and choose your preferred cooking method between direct or indirect grilling. Serve with a sauce or condiments, or incorporate in other recipes.

So, delve into the world of grilled portobello mushrooms to explore their robust flavors and unique textures. Try out different marinades and seasonings and explore both direct and indirect grilling.

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