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Grilled Portobello Mushroom Burgers 

Last Updated on January 31, 2024

Portobello mushroom burgers are bursting with flavor and packed with nutrients. If you’re looking for a delicious and healthy vegan burger recipe that is simple and straightforward, look no further than this shroom burger recipe!

portobello burger

You’ll love the unique combination of grilled mushrooms, caramelized onion, garlic, herbs, spices, arugula, and vegan burger buns that creates hearty veggie burgers. 

Not only is it unbelievably flavorful but it’s also quite filling as well thanks to the mushrooms used as patties. 

It’s time to ditch those processed burgers and take on a healthier dinner today by trying these yummy burgers! 

Burger With Portobello Mushroom

Portobello mushrooms (also known as Portobella mushrooms) are large, brown round-shaped mushroom that has a texture and taste similar to steak.

They are the same species as crimini and white button mushrooms.

However, since they are from an older portion of the life cycle, they are much larger and more robust in flavor.

Vegetarian and vegan recipes often use these mushrooms in place of meat.

portobella mushroom burger

This versatile mushroom contributes an earthy flavor to dishes and provides a satisfyingly meaty chew that absorbs sauces and seasonings like a sponge.

Whether grilled, baked, or sautéed, portobello mushrooms make a great addition to any meal because they provide umami flavor without being too overpowering like shiitake mushrooms.

They also provide dietary fiber, Vitamin D, Potassium, and several B vitamins, and on top of all, they’re low in calories.

portobello mushroom recipes

For this recipe, the mushrooms are marinated in olive oil, balsamic vinegar, dijon mustard, spices, and mixed herbs to give them that incredible flavor.

Serve them on your favorite buns with a fresh salad or just enjoy it as is – either way, you’re sure to love it!

Grilled Portobello Mushroom Burger Recipe

To make this recipe, you will need the following ingredients for the marinade:

mushroom burgers recipe portobello
  • 4 large portabella caps (about 350g)
  • 6 tablespoon /90ml balsamic vinegar
  • 2 tablespoons/30ml olive oil
  • 2 tsp/10ml Dijon mustard
  • 1 tsp/1g dried oregano
  • ½ tsp/1g ground coriander
  • ½ tsp/3g coarse salt
  • ½ tsp/ ground black pepper

For Caramelised Onion

  • 1 large/225g yellow onion, thinly sliced
  • 2 tbsp/30ml olive oil
  • 3 cloves/15g garlic, minced

Burger Toppings

Step-by-Step Making Portobello Burgers

Creating the perfect portobello mushroom burger is an art.

Follow this step-by-step guide carefully to ensure a delicious meal that will satisfy even the pickiest of eaters.

portobello burger recipe

1. Rinse and dry or gently wipe off the mushrooms with a damp paper towel. Trim the stem so the mushroom cap can rest flat. With a fork, prick the top of the mushroom caps several times.

2. In a mixing cup or small bowl, mix the balsamic vinegar, 2 tbsp/30ml olive oil, mustard, oregano, coriander, salt, and pepper. Whisk together until well blended.

3. Add the mushrooms to a large ziplock bag. Pour in the marinade. Close and move everything around to completely coat the mushrooms. Place at room temperature for 20-30 minutes.

4. Slice the onion into ¼”/6mm quarter circles. Mince the garlic.

portobello mushroom recipe

5. Heat 2 tbsp oil in a large frying pan on medium. Add the onion and garlic. Cook for 12-15 minutes, stirring regularly until golden and fragrant.

6. Line a baking sheet with foil or parchment paper. Turn the oven to broil and place the oven rack in the upper third (but not directly under the heating element). Place the mushrooms cap side up on the baking sheet.

7. Flip and cook for 5 minutes per side under the broil until barely starting to char.

8. Slice the buns. For best results drizzle a bit of olive oil and toast for a minute or two under the broiler.

Assemble the burgers:

portobello mushroom recipe

9. Place a cooked portabella cap on the bun (or slice the mushrooms) place a small handful of arugula and 1-2 tbsp of caramelized onions on top. Cover with the top bun and serve.

Your portobello mushroom burger is now complete! Serve your finished portobello mushroom burgers on buns with lettuce, tomato, and your favorite condiments.

Be sure to try different variations of this classic recipe. Enjoy!

For Grilling

For griddling, heat the grill pan over medium heat and brush the grates with oil before placing the mushrooms rounded side down on it.

Cook for 6-8 minutes before flipping over and cooking for another 6 minutes to get grill marks from the pan.

Add toppings such as onion slices and lettuce pieces to finish off. 

portobello mushroom recipes

For grilling in a skillet, heat up a large cast iron or non-stick skillet over medium/high heat before adding the mushrooms’ smooth side up into it.

Cook for 8-10 minutes until browned before adding vegan cheese and other toppings as desired.

Once cooked thoroughly through either method, serve warm with your favorite sides such as salad greens for an enjoyable light meal! 

Tips for Making the Perfect Portobello Mushroom Burger

Creating the perfect portobello mushroom burger takes practice and skill, but with a few simple tips, you’ll soon be grilling up delicious burgers that are sure to impress your friends and family.

  • Start by selecting the right size mushrooms. Look for mushrooms that have a nice large cap and stem length as this will help them hold together better when grilling.
  • Make sure to clean your mushrooms well before cooking. You can use a damp towel to softly scrub the top of the mushroom cap, being careful not to break or tear them
  • It’s also important to note that when preparing portobello mushroom burgers you should never skip the step of marinating them in an oil-based marinade as this is the key to giving them flavor.
  • Once cleaned and prepared for cooking, brush your mushrooms with oil on both sides to help prevent sticking on the grill. Place mushrooms gill side up on medium-high heat and let cook until lightly browned and tender. Flip your portobellos one or two times while they are cooking – the flavor develops when they’re grilled nicely on both sides!
  • Lastly, you can season your cooked portobellos with more salt and pepper after they’ve been grilled if desired before adding dressings or toppings of your choice – like vegan cheese, baby spinach leaves, or caramelized onions! Your delicious Portobello Mushroom Burgers will be ready to serve immediately!
burger with portobello mushroom

Serving Suggestions

Portobello mushroom burgers make a healthy alternative to traditional hamburgers and taste delicious served as part of a balanced meal.

Here are some serving suggestions to help you prepare your mushroom masterpieces:

  • This recipe pairs perfectly with crunchy salad greens such as arugula, romaine, iceberg, or kale. Top them with fresh vegetables and a light dressing for an added flavor boost.
  • If you’re looking for additional flavor, consider topping your portobello burgers with basil pesto, sliced avocado, and tomatoes.
  • Serve these burgers on your favorite bun or directly on the plate alongside some pickles and grilled vegetables. Some tasty additions include red peppers, onions, squash, and sweet potatoes.
  • Make it a full meal by adding a side of air fryer smashed potatoesbaked potatoesmashed cauliflower, or even coleslaw for a contrast in flavors and textures.
  • Complement the earthy flavors of the portobello mushrooms by adding savory sauce like vegan cream cheese or spicy condiments like soy saucevegan spicy mayonnaise, or chili oil to your burgers.
portobello mushroom burger

You can make this delicious portobello mushroom burger recipe any time for a quick weeknight dinner or special occasion meal.

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My Favorite Vegan Recipes 

portobello burger

Portobella Mushroom Burgers (Juicy and Satisfying!)

Grilled Portobello mushroom burgers are bursting with flavor and packed with nutrients. If you’re looking for a delicious and healthy vegan burger recipe that is simple and straightforward, look no further than this shroom burger recipe!
5 from 13 votes
Print Rate
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Servings: 4 burgers
Calories: 258kcal
Author: SHU-CHUN

Ingredients

Caramelized Onion

  • 1 ea yellow onion large, thinly sliced
  • 2 tbsp olive oil 30ml
  • 3 clove garlic minced, approx. 15g

Burger Toppings

  • 3 cup baby arugula 35g, washed and dried
  • 4 ea vegan burger buns

Instructions

  • 1. Rinse and dry or gently wipe off the mushrooms with a damp paper towel. Trim the stem so the mushroom cap can rest flat. With a fork, prick the top of the mushroom caps several times.
  • 2. In a mixing cup or small bowl, mix the balsamic vinegar, 2 tbsp/30ml olive oil, mustard, oregano, coriander, salt, and pepper. Whisk together until well blended.
  • 3. Add the mushrooms to a large ziplock bag. Pour in the marinade. Close and move everything around to completely coat the mushrooms. Place at room temperature for 20-30 minutes.
  • 4. Slice the onion into ¼”/6mm quarter circles. Mince the garlic.
  • 5. Heat 2 tbsp oil in a large frying pan on medium. Add the onion and garlic. Cook for 12-15 minutes, stirring regularly until golden and fragrant.
  • 6. Line a baking sheet with foil or parchment paper. Turn the oven to broil and place the oven rack in the upper third (but not directly under the heating element). Place the mushrooms cap side up on the baking sheet.
  • 7. Flip and cook for 5 minutes per side under the broil until barely starting to char.
  • 8. Slice the buns. For best results drizzle a bit of olive oil and toast for a minute or two under the broiler.
  • 9. Place a cooked portabella cap on the bun (or slice the mushrooms) place a small handful of arugula and 1-2 tbsp of caramelized onions on top. Cover with the top bun and serve.
    Your portobello mushroom burger is now complete! Serve your finished portobello mushroom burgers on buns with lettuce, tomato, and your favorite condiments. Be sure to try different variations of this classic recipe. Enjoy!

Nutrition

Serving: 1burger | Calories: 258kcal | Carbohydrates: 6g | Protein: 1g | Fat: 14g | Saturated Fat: 2g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 10g | Sodium: 334mg | Potassium: 107mg | Fiber: 1g | Sugar: 4g | Vitamin A: 359IU | Vitamin C: 3mg | Calcium: 41mg | Iron: 1mg

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