
Portobello mushrooms are a popular choice for grilling due to their large size and meaty texture. They make a great vegetarian option and can be served as a side dish or main course. Grilled portobello mushrooms are easy to prepare and can be cooked on an indoor or outdoor grill. The key to enhancing their flavour is to use a marinade with ingredients such as balsamic vinegar, olive oil, lemon juice, garlic, rosemary, and soy sauce. Before grilling, it is important to clean the mushrooms and remove the stems and gills. The grilling time is typically around 8 to 10 minutes, depending on the desired texture. Portobello mushrooms are a versatile ingredient that can be served in a variety of ways, such as stuffed, in tacos, or as a burger.
| Characteristics | Values |
|---|---|
| Main Ingredient | Portobello Mushrooms |
| Clean the Mushrooms | Use a damp paper towel to wipe them clean. |
| Remove Stems | Remove and discard the stems. |
| Remove gills | Use a small spoon to lightly scrape around the underside of the caps to remove the gills. |
| Marinade | Balsamic vinegar, olive oil, lemon juice, minced garlic, rosemary, soy sauce, black pepper, cayenne, salt, onion powder, and shredded Parmesan cheese. |
| Marinating Time | 10 minutes to 30 minutes. Not more than 40 minutes. |
| Grill Temperature | 450 degrees F |
| Grill Time | 3-4 minutes on each side, 4-5 minutes per side, 5-7 minutes on each side, 5 to 8 minutes, 6 to 8 minutes, 7 minutes, 8-10 minutes. |
| Storage | Refrigerate the leftovers in an airtight container for 3-4 days. |
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What You'll Learn

How to prepare the mushrooms for grilling
Portobello mushrooms are a great choice for grilling, as they are large and won't fall through the grates. They are also versatile, as they can be served as a side dish, a light main course, or chopped up and added to other recipes.
Before grilling, you should clean the mushrooms with a damp paper towel to remove any dirt. You can also trim the ends of the stalks. Some recipes recommend removing the stems and gills with a spoon, as the gills can turn your dish an unappetizing colour, and the stems can be tough and fibrous. However, both are edible.
Next, you'll want to marinate the mushrooms. A simple marinade can be made by whisking together ingredients like olive oil, balsamic vinegar, lemon juice, garlic, rosemary, soy sauce, and spices. Place the mushrooms in a shallow dish and coat both sides with the marinade. You only need to leave them for around 10 minutes, but you can leave them for up to 30 minutes if you're busy. Don't leave them for longer than 30 minutes, or they will become too salty and start to turn rubbery.
You can also add 2 ounces of shredded Parmesan cheese to your marinade, but this is optional.
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Marinade ingredients and preparation
Portobello mushrooms are a great option for grilling, as they have a distinct flavour and meaty texture. To prepare them for grilling, start by cleaning the mushrooms with a damp paper towel and removing the stems. You can also use a small spoon to gently scrape away any gills from under the caps, as they can turn your dish a dark, unappetizing hue.
Once your mushrooms are prepped, it's time to make the marinade. A simple yet delicious marinade can be made by whisking together balsamic vinegar, olive oil, lemon juice, and garlic in a shallow dish. You can also add other ingredients to this base, such as rosemary, soy sauce, black pepper, cayenne, or onion powder to enhance the flavour. If you're feeling adventurous, you can even add a bit of shredded Parmesan cheese to the marinade.
When combining your marinade ingredients, it's important to use a dish that is large enough to hold the mushrooms in a single layer. This will ensure that the mushrooms are evenly coated. You can then add the mushrooms to the marinade, making sure to coat both sides. It is recommended to let the mushrooms sit in the marinade for around 30-40 minutes. Do not let them sit for longer than 30 minutes if you are using soy sauce or for more than 40 minutes in total, as the mushrooms will become too salty or start to turn rubbery.
While your mushrooms are marinating, you can preheat your grill to 450 degrees Fahrenheit. Once the grill is hot and your mushrooms are flavourful, it's time to start grilling! Place the mushrooms on the grill and cook for 3-5 minutes on each side, brushing them with the marinade as they cook. You can adjust the grilling time depending on how soft you want your mushrooms to be. For really soft and tender mushrooms, go for a longer grill time, and for a firmer bite, take them off the grill a bit earlier.
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Grilling techniques
Grilling portobello mushrooms is a simple process that can be done on an indoor or outdoor grill. Before grilling, you should clean the mushrooms with a damp paper towel and gently rub off any visible dirt from the caps. You can also remove the stems and gills, although these are edible. The gills may be removed if you want to avoid a dark-coloured liquid being released during cooking.
To enhance the flavour of the mushrooms, it is recommended to marinate them before grilling. A basic marinade might include balsamic vinegar, olive oil, lemon juice, garlic, and salt. You can also add spices like garlic powder, black pepper, cayenne, rosemary, or thyme. It is important not to over-marinate the mushrooms, as they are very absorbent. 30-40 minutes of marination should be enough, and then you can get them on the grill.
When grilling, preheat your grill to around 450 degrees Fahrenheit. Place the mushrooms on the grill, gill-side down or up, and cook for 4-8 minutes on each side, or until they are softened and slightly darkened in colour. You can baste the mushrooms with the marinade as they cook, and adjust the grilling time depending on how soft you want the mushrooms to be.
Portobello mushrooms have a distinct flavour and meaty texture, making them a great vegetarian option for grilling. They can be served as a side dish, in a bun, or stuffed with fillings like cheese and spinach for a more substantial main course.
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How to store leftovers
Grilled portobello mushrooms are best enjoyed fresh off the grill. However, if you have leftovers, you can store them in an airtight container in the refrigerator for up to 2 to 4 days.
To store leftovers, let the grilled mushrooms cool down to room temperature. Then, place them in an airtight container and store them in the fridge. You can reheat the mushrooms in a microwave or oven when you're ready to eat them again.
If you've prepared a large batch of grilled portobello mushrooms and want to store them for longer, you can freeze them. Place the mushrooms in a single layer on a baking sheet and put them in the freezer. Once they are frozen, transfer the mushrooms to a freezer bag or airtight container. They will keep well in the freezer for up to 2 months.
When you're ready to enjoy your frozen grilled portobello mushrooms, simply take them out of the freezer and reheat them in the oven, microwave, or grill. You can also let them thaw in the refrigerator before reheating if you prefer.
Grilled portobello mushrooms are a versatile dish that can be enjoyed as a main course, side dish, or added to other recipes. They are a great vegetarian option and can even be used as a meat substitute in dishes like tacos or burgers.
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Portobello mushrooms as a meat substitute
Portobello mushrooms are a great meat substitute, offering a meaty factor and texture that can be enhanced by grilling. They are large mushrooms with a savoury, almost meaty taste, making them an excellent alternative to chopped meat in dishes like tacos or burgers.
The key to enhancing their flavour is to use a marinade that complements their earthy, umami qualities. A simple marinade can be made from balsamic vinegar, olive oil, lemon juice, and garlic, with salt and pepper to taste. You can also add rosemary, thyme, or other spices like garlic powder, black pepper, and cayenne.
When preparing Portobello mushrooms as a meat substitute, it is important to clean them thoroughly. Remove the stems and use a paper towel to gently wipe away any dirt from the caps. You may also choose to remove the gills with a small spoon, as they can turn your dish an unappetizing colour, though they are edible.
After preparing the mushrooms, whisk together your chosen marinade ingredients in a shallow dish. Add the mushrooms to the marinade, ensuring both sides are coated, and leave for 10 minutes to half an hour. Then, preheat your grill to around 450°F and place the mushrooms on the grill, basting them with the remaining marinade as they cook. Grill each side for 3-5 minutes, until they have grill marks and a slightly darkened colour.
Portobello mushrooms are a versatile meat substitute that can be served as a main course or chopped up and added to other recipes. They can also be stuffed with fillings like cheese and spinach for a more complex dish. When served as a side, they pair well with countless main courses, including meat, chicken, or fish.
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Frequently asked questions
Use a damp paper towel to wipe the mushrooms clean. You can also use a small spoon to gently remove the gills from the underside of the caps.
Marinate the mushrooms for 10 minutes to 30 minutes. Do not let them sit for longer than 40 minutes as they will start to go rubbery.
You can use balsamic vinegar, olive oil, lemon juice, minced garlic, and salt. You can also add spices like garlic powder, black pepper, rosemary, thyme, and cayenne.
Preheat your grill to 450 degrees Fahrenheit. Grill the mushrooms for 3-8 minutes on each side, depending on your desired texture. Grill them for a shorter time if you want your mushrooms to have a bite, and for a longer time if you want them softer and more tender.

























