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Three portobello mushroom burgers on a wooden plate with one of them cut in half showing the texture and filling of the burger and the portobello mushroom. The burgers are surrounded by a plate of french fries

Portobello Mushroom Burger

Course BBQ, burgers, grill, main, Main Course, vegan, vegetarian
Cuisine American, BBQ, Mediterranean, Summer
Keyword burger, burger recipe, grilled burger, homemade burger, Mushroom burgers, portobello mushrooms
Prep Time 5 minutes
Cook Time 15 minutes
Servings 4 Burgers
Calories 330 kcal
Author Mahy

Ingredients

Mushrooms

  • 4 Portobello Mushrooms wiped clean
  • 1/2 teaspoon salt and pepper
  • 2 Tablespoon s olive oil
  • 1/2 cup cheddar cheese shredded, use more or less. Use your favorite cheese

Marinade (optional)

  • 2 teaspoons balsamic vinegar
  • 2 cloves garlic minced
  • 1-2 tabelspoons thyme fresh or 1 teaspoon dried

Assembling

  • 4 burger buns
  • 1/3 cup Spicy Mayo Homemade Recipe here.
  • 1 cup Arugula
  • 1 onion sliced
  • 2 tomatoes thinly sliced

Instructions

  1. Start by wiping off any dirt you see on the portobello mushroom using a damp kitchen towel. Then season the mushrooms on both sides with salt, pepper and olive oil. You can add a teaspoon of balsamic vinegar and 2 cloves of minced garlic along with fresh thyme. Otherwise keep it simple and basic.
    ingredients for the portobello mushroom burger including portobello mushrooms, seasoning, olive oil, spicy mayo, burger buns, cheddar cheese, onions, lettuce, tomatoes
  2. Preheat a BBG grill or indoor grill on medium high heat.
  3. Add in the seasoned mushrooms, tops side down.
    seasoned portobello mushrooms on a grill tops side down
  4. Grill for 5-6 minutes and flip.
  5. Continue cooking for another 5 minutes until the mushrooms have softened.
    Golden and cooked tops of the mushrooms flipped to the other side to continue cooking
  6. Add some cheddar cheese on top of the mushrooms and turn off the heat. Cover the grill for 1-2 minutes until the cheese has melted.
  7. Assemble the Burgers
  8. Brush your burger bun generously with Spicy Mayo sauce on the tops and bottom.
    Burger buns spread generously with spicy mayo
  9. Layer your burger toppings. We used Arugula, sliced onions and tomatoes.
    The toppings are loaded over the burger bun including some greens, sliced onions, sliced tomatoes
  10. Add the mushroom with the melted cheese on top.
    The portobello mushroom with the cheese added on the top and the tops bun
  11. Place the top burger bun and it's ready!

Recipe Notes

Best Tips for Mushroom Burgers

  1. Buy fresh Portobello mushrooms that don't look wilted or scratched.
  2. It's best if you wipe them down with a wet kitchen towel or paper instead of washing mushrooms in water.
  3. You can opt for a simple seasoning of salt, pepper and olive oil for this recipe. However you can elevate it with simply 2 cloves of garlic, 2 tablespoons balsamic vinegar and some fresh thyme. 
  4. Use an outdoor or indoor grill for this recipe, both work equally great.
  5. Cook the mushrooms for just 5-6 minutes per side until slightly softened. 
  6. Use your favorite sauces for the buns: Spicy MayoGarlic Parmesan SauceBlue Cheese Dressing or Nacho Cheese Sauce.
  7. Likewise, try our homemade Best Soft Burger Buns.
  8. Your toppings are completely to your taste, so as the choice of cheeses.

What to Serve with Portobello Mushroom Burgers?

What can go better with burgers other than some good old Air Fryer Frozen French Fries or Air Fryer Sweet Potato Fries? A simple Wedge SaladCaprese SaladAvocado Orange Salad with Citrus Dressing can't go wrong. 

Something like my grandpa's Pan Fried Potatoes with spicy garlic and herbs would be phenomenal too. Or a light Fish Taco Slaw for crunch! A bright Peach Burrata Salad would be super refreshing!

Is Portobello Mushroom burger Healthy?

It's lighter than beef or lamb, and mushrooms are loaded with health benefits for sure. To make this burger even lighter, try the lettuce wrap instead of a bun.

What Can you Add to the burgers?

SO MUCH! Something like fried eggs would make it a brunch favorite! Spinach, kale, any greens. Basil Pesto and some Burrata Cheese for a lavish burger. Sun Dried Tomato PestoGreek Salad Dressing and feta, or try Pizza Sauce and mozzarella!

How to Store Leftovers?

It's best to assemble the burgers right before serving. Leftover cooked mushrooms are great for use in any other recipe on their own. Cooked mushrooms can be stored in the fridge for upto 4 days. However assembled burgers are best eaten the same day. 

To reheat cooked portobello mushrooms, we love to use the air fryer at 350 degrees for 3 minutes. 

If you're freezing the cooked mushrooms, you can individually wrap them and freeze for 2 months. reheat the same as above once thawed.

Nutrition Facts
Portobello Mushroom Burger
Amount Per Serving
Calories 330 Calories from Fat 162
% Daily Value*
Fat 18g28%
Saturated Fat 5g31%
Trans Fat 0.01g
Polyunsaturated Fat 4g
Monounsaturated Fat 7g
Cholesterol 17mg6%
Sodium 764mg33%
Potassium 590mg17%
Carbohydrates 29g10%
Fiber 3g13%
Sugar 9g10%
Protein 10g20%
Vitamin A 799IU16%
Vitamin C 13mg16%
Calcium 191mg19%
Iron 2mg11%
* Percent Daily Values are based on a 2000 calorie diet.