Portabella Mushroom Burgers with Red Pepper Mayonnaise


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

Prep Time:
15 mins
Cook Time:
15 mins
Additional Time:
2 hrs 10 mins
Total Time:
2 hrs 40 mins
4 mushroom burgers


  • 4 large portobello mushroom caps

  • ½ cup soy sauce

  • ½ cup balsamic vinegar

  • 4 cloves garlic, chopped, or more to taste

  • 1 large red bell pepper

  • 1 cup reduced-fat mayonnaise

  • 1 tablespoon cayenne pepper, or to taste

  • 4 hamburger buns, split


  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.

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.

Nutrition Facts (per serving)

375 Calories
23g Fat
38g Carbs
7g Protein
Nutrition Facts
Servings Per Recipe 4
Calories 375
% Daily Value *
Total Fat 23g 29%
Saturated Fat 4g 19%
Cholesterol 21mg 7%
Sodium 2459mg 107%
Total Carbohydrate 38g 14%
Dietary Fiber 3g 10%
Total Sugars 9g
Protein 7g
Vitamin C 55mg 273%
Calcium 90mg 7%
Iron 3mg 15%
Potassium 304mg 6%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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