Portabella Mushroom Burgers with Red Pepper Mayonnaise Recipe - Allrecipes.com
Portabella Mushroom Burgers with Red Pepper Mayonnaise Recipe

Portabella Mushroom Burgers with Red Pepper Mayonnaise

Recipe by  

"Marinated portabella mushrooms with red pepper mayo. Serve with tomato, onion, and lettuce or your choice of toppings and enjoy."

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Ingredients Edit and Save

Original recipe makes 4 mushroom burgers Change Servings
  • PREP

    15 mins
  • COOK

    15 mins

    2 hrs 40 mins


  1. Place mushrooms into a large resealable plastic bag; add soy sauce, balsamic vinegar, and garlic. Seal bag and shake to combine ingredients; marinate mushrooms at room temperature for 2 to 3 hours, turning bag occasionally.
  2. Preheat grill for medium-high heat and lightly oil the grate.
  3. Place red bell pepper onto the grate and grill until the skin is blistered and charred, turning often, about 10 minutes. Transfer pepper to a bowl and cover with plastic wrap; let pepper cool. When pepper is cool enough to handle, remove and discard skin, stem and seed the pepper, and chop.
  4. Mix pepper into mayonnaise in a bowl and stir in cayenne pepper. Chill red pepper mayonnaise until serving time.
  5. Grill marinated mushroom caps until browned and juicy, about 6 minutes per side. Serve mushrooms on buns, topped with red pepper mayonnaise.
Kitchen-Friendly View


  • Editor's Note:
  • The nutrition data for this recipe includes the full amount of the red pepper mayonnaise. The actual amount of the mayonnaise consumed will vary.

Reviews More Reviews

Most Helpful Positive Review
May 23, 2012

YUM! The marinade gave the mushrooms a wonderful flavor. The mayo was great, but a bit spicy for me, so I'd reduce the cayenne next time, but that's my preference. Instead of roasting a pepper, I had a jar of roasted peppers and onions, so I went w/ that...perfect! I served these on 'Soft Onion Sandwich Rolls' also from this site. I will be making these again! Thanks for sharing. :)

Most Helpful Critical Review
Jun 13, 2012

Blech! Maybe I did something wrong because the other reviews seem to be great, but the mushrooms soaked up so much of the marinade that all we could taste was the vinegar. The mayonnaise was good, but I won't be trying these burgers again.


6 Ratings

May 29, 2012

This was excellent!!! However, I didnt really measure the ingredients for the marinade and it turned out great. Also, make sure to use a good quality balsamic vinegar,it does make a huge differernce (no matter the recipe), a good balsalmic is on the thicker side. I also grilled slice beefsteak tomato slices on the grill and added a slice of sharp cheddar to compliment my shroom.

Aug 08, 2012

My husband and I really enjoyed these. I liked the fact that it used simple ingredients I had on hand. The red pepper mayo was delicious. I also did not use as much cayenne as it called for. Just about 6 dashes and it was plenty hot. I could only marinate for 1 1/2 hours and the flavor was perfect.

Oct 11, 2013

I tried this recipe yesterday. I am working on one vegetarian meal a week. It was okay but I wouldn't make it again.

Apr 14, 2013

This was good. I like the marinade for the mushrooms but what was so outstanding was the red pepper mayo!! So simple yet so good.


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  • Calories
  • 375 kcal
  • 19%
  • Carbohydrates
  • 37.8 g
  • 12%
  • Cholesterol
  • 21 mg
  • 7%
  • Fat
  • 22.5 g
  • 35%
  • Fiber
  • 2.7 g
  • 11%
  • Protein
  • 7.1 g
  • 14%
  • Sodium
  • 2459 mg
  • 98%

* Percent Daily Values are based on a 2,000 calorie diet.

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