Portobello Mushroom Burger
Are you tired of mushy, bland veggie burgers? Then, look no further than the portobello mushroom burger! Follow these simple steps to create a hearty, delicious burger that will satisfy even the biggest carnivores.

With its meaty texture and robust flavor, portobello mushrooms are the perfect substitute for beef. Whether you’re a seasoned vegetarian griller or a curious carnivore, this article will teach you how to create the perfect portobello mushroom burger. From selecting the ideal mushroom to mastering the marinade and grilling techniques, we’ve got you covered. Plus, we’ll explore the best toppings and accompaniments to take your burger to the next level. So, fire up your grill and get ready to impress your taste buds with this mouth-watering mushroom burger recipe.
Why make this burger recipe?
Before we dive into the details of this recipe, you might be wondering why you should bother making it. Well, there are plenty of good reasons.
- First and foremost, if you’re a vegetarian or looking to cut back on meat, this mushroom burger is a tasty alternative that doesn’t sacrifice flavor or texture. Even if you’re a die-hard carnivore, you might be surprised by how satisfying and filling this burger can be.
- Plus, portobello mushrooms are a nutritional powerhouse packed with vitamins and antioxidants. They’re low in calories and fat, making them a great option for those watching their waistlines. And let’s not forget that grilling is a fun and social way to cook, perfect for summer barbecues or weeknight meals.
- Even beyond the health and social benefits, making this mushroom burger recipe is simply a delicious way to switch up your typical meal routine. And who knows, it might even become your new go-to burger recipe.

Ingredients and substitutes
To make the perfect portobello mushroom burger, it’s important to use the right ingredients. Here’s what you’ll need:
- Portobello mushrooms: Choose big, meaty mushrooms that are firm and free of bruises or soft spots.
- Olive oil: Brushing the mushrooms with olive oil before grilling helps to keep them moist and prevent sticking.
- Balsamic vinegar: This adds a tangy flavor to the mushrooms, but you can also use red wine vinegar or lemon juice if you prefer.
- Garlic: Fresh garlic cloves, minced or crushed, add a savory flavor to the mushrooms.
- Salt and pepper: These seasonings add a simple yet essential boost of flavor.
- As for substitutes, you can experiment with different types of mushrooms if you can’t find portobellos, such as shiitake or oyster mushrooms. You can also swap out the balsamic vinegar for another type of acid, like apple cider vinegar or lime juice. And if you don’t have fresh garlic, you can use garlic powder instead.

Selecting the perfect mushrooms
When it comes to selecting the perfect mushroom for your portobello burger, there are a few key things to keep in mind.
- First and foremost, you want to look for mushrooms that are firm and meaty. Mushrooms that are too soft or squishy won’t hold up on the grill as well.
- Next, take a close look at the gills on the underside of the mushroom cap. Choose mushrooms with gills still tightly closed, as this indicates they are fresh. Mushrooms with open or exposed gills may be past their prime.
- Finally, size matters. Look for mushrooms that are large enough to make a good burger patty but not so large that they are unwieldy or difficult to cook evenly. A cap that’s around 4-5 inches in diameter is usually just right.
Portobello mushroom burger
- Prep – Wipe the mushrooms dry with a paper towel. Then, remove the steam and grills.

- Marinade – In a bowl, combine all the marinade ingredients and brush each mushroom with the marinade on both sides.
Pro tip – You can use your hands to marinate the mushrooms on both sides. - Grill – Heat a grill on medium-high heat. Place the marinated mushrooms gill-side up on the grill and let them cook for about 5-7 minutes before flipping and cooking for an additional 3-5 minutes on the other side.
Pro tip – Make sure to preheat your grill properly and brush the grates with oil to prevent sticking.

- Stack – Place the mushrooms on toasted Hamburger buns and serve with desired fixings. I topped mine with burger sauce, butter lettuce, grilled onions, and tomato slices.
Pro tip – If you want to add some extra flavor, try basting your mushrooms with leftover marinade or a mixture of melted butter and garlic.

Toppings and accompaniments
After you’ve grilled your Portobello mushroom burger to perfection, the fun part begins – toppings and accompaniments! This is where you can really get creative and experiment with different flavors and textures.
- For a classic burger experience, top your mushroom with lettuce, tomato, onion, and pickles.
- You can also add cheese, avocado, or even a fried egg for extra indulgence. And if you’re feeling adventurous, try topping your burger with sautéed onions, peppers, or spicy salsa.
- Cheeseburger – Top the mushrooms with a slice of cheese for the final 2 minutes on the grill.
- Double burger – Use grilled portobello mushrooms to make a double burger or double cheeseburger
- To complement your burger, serve it with some delicious sides. Fresh, crispy fries or tangy coleslaw are always crowd-pleasers. Also, grilled vegetables, like zucchini or corn, make for a healthy and flavorful addition to your meal.

Buns for burgers
Buns can make or break any burger. There are many different varieties of burger buns at the grocery store, but make sure to pick one that is at least super soft. Today, I am using brioche burger buns.
- Soft homemade burger buns – a classic white bread dough made into buns.
- Hokkaido hamburger buns – a Japanese milk bread made with a flour roux.
- Brioche burger buns – are rich and buttery and made with lots of milk and eggs.
- Soft whole wheat burger buns – made with half whole wheat flour instead of white flour.
- Sourdough brioche buns – made using a sourdough starter and a brioche dough.

Frequently asked questions
The mushroom should be tender and juicy, and the center should be cooked through. You can check this by piercing the center with a fork or knife – if it’s soft and easy to penetrate, it’s ready to eat.
Absolutely! While Portobello mushrooms are the most popular choice for burgers, you can use any type of mushroom you like. Just adjust the cooking time as needed for smaller or larger mushrooms.
Make sure to oil the grill grates and the mushroom caps to prevent sticking. You can also use toothpicks or skewers to hold the burger together while grilling.
Yes, you can marinate the mushrooms and prep the toppings in advance to save time. Just make sure to keep the mushrooms in an airtight container in the fridge until you’re ready to grill.

Portobello Mushroom Burger
Are you tired of mushy, bland veggie burgers? Look no further than the portobello mushroom burger! Follow these simple steps to create a hearty, delicious burger that will satisfy even the biggest carnivores.
Video
Ingredients
- 4 large Portobello mushrooms wiped, stem and gills removed
- 2 tbsp Olive oil extra virgin
- 1 tbsp Balsamic vinegar
- 1 tsp Worcestershire sauce
- ¼ tsp Garlic powder
- ¼ tsp Salt
- ¼ tsp Black pepper powder
- ½ tsp Italian seasoning
- 4 large Hamburger buns
- 1 large Grilled onions sliced
- 1 large Tomato sliced
- ¼ cup (60 ml) Burger sauce
Method
- Prep – Prepare the mushrooms by wiping them dry with a paper towel. Remove the stem and gills.4 large Portobello mushrooms
- Marinade – In a bowl, combine all the marinade ingredients and brush each mushroom with the marinade on both sides.2 tbsp Olive oil , 1 tbsp Balsamic vinegar, 1 tsp Worcestershire sauce , ¼ tsp Garlic powder, ¼ tsp Salt, ¼ tsp Black pepper powder, ½ tsp Italian seasoning
- Grill – Heat the grill on medium-high heat. Place the marinated mushrooms gill-side up on the grill and let them cook for about 5-7 minutes before flipping and cooking for an additional 3-5 minutes on the other side.
- Stack – Place the mushrooms on toasted buns and serve with desired fixings. I topped mine with burger sauce, butter lettuce, grilled onions, and tomato slices.4 large Hamburger buns, 1 large Grilled onions, 1 large Tomato, ¼ cup Burger sauce







Wow! This is a great recipe for anyone looking for vegetarian meal ideas or simply wanting to try a new twist on a classic burger.
I followed your instructions and my burger came out beautifully! I used the charcoal grill and I love the smoky flavors!
Thank you, Mindy
I have the hardest time getting my family to eat mushrooms. They may give in if I make this burger! Thanks for sharing.
Lovely recipe, all my family loved it! Making them again soon surely!