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Portobello mushroom burger

The Best Portobello Mushroom Burger

Who says a delicious burger has to be made with meat? If you’re looking for a mouthwatering, juicy, and satisfying burger that’s packed with flavor, the Portobello mushroom burger is the perfect choice. It’s smoky, savory, and has a meaty texture that makes every bite incredible.
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Prep Time 15 minutes
Cook Time 10 minutes
Total Time 25 minutes
Course Main Course
Cuisine American, Mediterranean
Servings 2 servings
Calories 320 kcal

Equipment

  • Grill or stovetop pan
  • Small bowl
  • Basting brush or spoon
  • Tongs or Spatula
  • Knife and Cutting Board
  • Measuring spoons

Ingredients
  

For the Mushroom Marinade:

  • 2 large Portobello mushroom caps
  • 2 tablespoons balsamic vinegar
  • 1 tablespoon olive oil
  • 1 teaspoon soy sauce or tamari for gluten-free
  • 1 teaspoon Dijon mustard
  • 1 teaspoon garlic powder
  • ½ teaspoon black pepper

For the Burger:

  • 2 burger buns whole wheat, brioche, or gluten-free
  • 2 slices of cheese optional, try cheddar, Swiss, or vegan cheese
  • 2 lettuce leaves
  • 2 slices of tomato
  • 2 slices of red onion
  • ¼ cup mashed avocado or mayo optional

For Extra Flavor (Optional):

  • Pickles or jalapeños
  • Sautéed onions or mushrooms
  • BBQ sauce pesto, or spicy mayo

Instructions
 

Step 1: Prep the Mushrooms

  • Wipe the Portobello mushrooms clean with a damp paper towel. Remove the stems and scrape out the gills with a spoon (optional, but this helps reduce excess moisture).

Step 2: Make the Marinade

  • In a small bowl, mix together the balsamic vinegar, olive oil, soy sauce, Dijon mustard, garlic powder, and black pepper.

Step 3: Marinate the Mushrooms

  • Place the mushrooms in a shallow dish or a zip-top bag. Pour the marinade over them and let them soak for at least 15 minutes, flipping halfway to coat both sides.

Step 4: Cook the Mushrooms

  • Grill method: Preheat the grill to medium heat. Cook the mushrooms for 4-5 minutes per side, basting with extra marinade as they cook.
  • Stovetop method: Heat a grill pan or skillet over medium heat. Add a little oil and cook the mushrooms for 4-5 minutes per side, until tender.

Step 5: Assemble the Burger

  • Toast the burger buns for extra flavor.
  • Spread mashed avocado, mayo, or your favorite sauce on the buns.
  • Place the grilled Portobello mushroom on the bottom bun. Add a slice of cheese (if using) and let it melt slightly.
  • Top with lettuce, tomato, red onion, and any extra toppings you love.
  • Cover with the top bun and enjoy!

Notes

Nutritional Value (Per Serving)

The nutritional values will vary slightly depending on the type of bun and toppings used, but here’s an approximate breakdown:
  • Calories: ~320-400 kcal
  • Protein: ~8-10g
  • Carbohydrates: ~45g
  • Fats: ~12-15g
  • Fiber: ~4-5g
  • Sodium: ~500-700mg (varies based on soy sauce and bun choice)
If you add cheese, avocado, or extra sauces, the calories and fat content will increase slightly. For a lower-carb version, use a lettuce wrap instead of a bun.
 
Did you make this recipe? Leave a comment and rating!
Nutrition Disclaimer:
The nutritional information on this website is only an estimate and is provided for convenience and as a courtesy only. The accuracy of the nutritional information for any recipe on this site is not guaranteed. It should not be used as a substitute for a professional nutritionist’s advice.
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