Portobello Mushroom Burger (Vegan)

Published: 10 November 2023 by Simon Deane

These portobello mushroom burgers made with a balsamic marinade are juicy and full of flavour and only take 15 minutes to make.
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If you’re looking for ideas for a meat free burger, then why not give these portobello mushroom burgers a whirl. They have a nice savoury flavour and mushrooms provide a nice texture in place of meat dishes. You use them as you would a regular burger patty, and you can stick them into a bun and top with your favourite burger toppings.

These portobello mushroom burgers can also work great along with a salad, adding plenty of flavour and texture.

Marinade for the Portobello Mushrooms

For the portobello mushroom marinade, you add the following ingredients to a bowl:

  • Balsamic vinegar
  • Soy sauce (or tamari)
  • Olive oil
  • Mixed herbs
  • Smoked paprika

The balsamic vinegar adds a tangy flavour along with some extra umami flavour and saltiness from the soy sauce. The olive oil adds some fat, since mushrooms are very low in fat.

Cooking the portobello mushrooms

To cook the portobello mushrooms, add a little oil to a pan and fry the mushrooms in the pan on a medium heat for around 7 minutes, flipping over half way through. If you have a grill pan, these work really well and give nice grilled lines across the mushroom caps. A flat based pan works perfectly well too.

These also taste great on the BBQ.

What burger toppings work for portobello mushrooms?

The burger toppings used for portobello mushrooms are pretty much the same as for regular burgers. I recommend the following:

  • Red onions
  • Mayo (I used vegan, regular also works)
  • Beef tomato slices
  • Avocado
  • Ketchup

If you like a cheesy flavour, you can melt some vegan cheese or dairy based cheese onto one of the burger baps under the grill.

I like sourdough burger baps but any type you like works fine. I lightly toast them but you may like them non-toasted, each to their own tastes.

a burger made with a portobello mushroom burger patty with fillings

Portobello Mushroom Burgers (Vegan)

Juicy portobello mushroom burgers that are quick and tasty
Prep Time 8 minutes
Cook Time 7 minutes
Servings 4
Calories 161 kcal


  • 4 portobello mushrooms
  • 4 tbsp olive oil
  • 3 tbsp balsamic vinegar
  • 3 tbsp soy sauce (or tamari)
  • 1 tsp mixed herbs
  • 1/2 tsp smoked paprika


  • cut the stems off the portobello mushrooms and give the caps a clean.
  • Prepare the marinade by adding 3 tbsp of olive oil, the balsamic vinegar, the soy sauce and the mixed herbs to a bowl.
  • Add the portobello mushrooms to the bowl and coat well with the marinade. Use your hands to rub the marinade into the mushrooms. Leave the mushrooms in the marinade for a few minutes, or longer if you have time.
  • Add a little oil to a pan and cook the mushrooms on a medium heat for around 7 minutes, flipping them over half way through.
  • Serve in burger buns along with your usual favourite burger toppings.


Calories: 161kcalCarbohydrates: 6gProtein: 3gFat: 14gSaturated Fat: 2gPolyunsaturated Fat: 2gMonounsaturated Fat: 10gTrans Fat: 0.003gSodium: 765mgPotassium: 348mgFiber: 1gSugar: 4gCalcium: 9mgIron: 1mg
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  • Simon Deane

    My mission is to provide the resources to help people to prepare their own healthy and tasty meals at home and to teach people about nutrition and how to eat healthier...

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