Vegan Portobello Burgers with Spicy Mayo

Happy Monday!

I'm not sure about you, but Spring and Summer weather scream burgers! Here in Texas it's already feeling like Spring so I put together a healthier and fresher take on a grilled classic. With this delicious "Vegan Portobello Burger with Spicy Mayo" recipe I show you how to get that grilled burger taste in the oven but this recipe is perfect for the grill too!

For my burgers, I added avocado which are high in monounsaturated fatty acids (the good fat!). Avocados are a good source of energy and contain calcium, iron, magnesium, potassium, copper, manganese, phosphorus and zinc.

In this burger, avocado is paired with tomato which are an excellent source vitamin C, biotin, molybdenum, and vitamin K. They are also a very good source of copper, potassium, manganese, dietary fiber, vitamin A (in the form of beta-carotene), vitamin B6, folate, niacin, vitamin E, and phosphorus.

But, the star of this burger is the flavorful portobello mushroom! Portobellos have a deep, meat-like texture and flavor which makes this a perfect burger alternative that will satisfy the vegetarians and meat-eaters alike! Portobellos are a low-calorie food rich in fiber and B vitamins. This is the perfect heart healthy and figure friendly alternative for your next burger night!

I paired this burger with dehydrated sweet potato chips, but I love steamed veggies or fruit as a great burger side! As with many of my recipes, feel free to change it up a bit! How delicious would this recipe be with a slice or two of the dehydrated bacon recipe I posted a few weeks back (check it out here!) or with caramelized onions or a big heap of spinach?! The possibilities are endless!

Let's get started!

Vegan Portobello Burgers
Vegan Portobello Burgers
Vegan Portobello Burgers
Vegan Portobello Burgers
Vegan Portobello Burgers

Vegan Portobello Burgers with Spicy Mayo Recipe

Serves 4


  • 4 portobello mushrooms (cleaned and de-stemmed)
  • ¼ cup soy sauce
  • ¼ cup balsamic vineger
  • 1 teaspoon liquid smoke
  • 3 garlic cloves (crushed)
  • 1 teaspoon olive oil
  • ¼ cup vegan mayo
  • 2 teaspoons sriracha chili sauce (more or less to taste)
  • ¼ teaspoon onion powder
  • 4 whole wheat buns
  • 1 ripe avocado
  • 1 tomato


  1. In a large, shallow dish mix soy sauce, balsamic vinegar, liquid smoke, and garlic together. 
  2. Marinate mushrooms in soy sauce mixture for 30 minutes at room temperature. Flipping mushrooms halfway through.
  3. Preheat oven to 425 °F.
  4. Grease a large baking sheet with 1 teaspoon olive oil. Place mushrooms cap side down on the baking sheet.
  5. Bake for 10 minutes. 
  6. Remove mushrooms from oven and flip to cap side up. Press with a spatula to remove extra liquid.
  7. Bake for 5 more minutes or until mushroom is tender.
  8. For the Spicy Mayo: in a small bowl combine mayo, sriracha, and onion powder. Mix to combine.
  9. Assemble burgers with a quarter of the spicy mayo, a quarter of the avocado, and a quarter of the tomato. Top with finished portobello burgers. Serve with your favorite side!
Vegan Portobello Burgers

Enjoy these burgers as much as we did! Let me know what you think by commenting below <3

With Health and Happiness,