Grilled Balsamic Portabella Mushroom Burger

Elevate your burger game with this Grilled Balsamic Portabella Mushroom Burger, a hearty and flavor-packed vegetarian option that’s perfect for summer grilling or a casual weeknight dinner. Marinated in a savory blend of balsamic vinegar, olive oil, soy sauce, and garlic, the meaty portabella mushroom caps soak up bold flavors before being grilled to tender, smoky perfection. Finished with crisp lettuce, juicy tomato, and sweet red onion on toasted buns, this burger delivers a satisfying bite that’s both wholesome and indulgent. With optional melty cheese and a dollop of creamy mayo, this recipe comes together in under 30 minutes and offers a delicious plant-based twist on a cookout classic. Perfect for vegetarians and grilled burger enthusiasts alike, this dish is sure to delight!

Nutriscore Rating: 66/100

Prep Time:15 mins

Cook Time:10 mins

Total Time:25 mins

Servings: 4

Ingredients

• 4 pieces Portabella mushroom caps
• 3 tablespoons Balsamic vinegar
• 2 tablespoons Olive oil
• 2 cloves Garlic
• 1 tablespoon Soy sauce
• 1 teaspoon Dried oregano
• 0.5 teaspoons Salt
• 0.25 teaspoons Black pepper
• 4 pieces Burger buns
• 4 pieces Lettuce leaves
• 1 large Tomato
• 1 small Red onion
• 4 tablespoons Mayonnaise
• 4 pieces Cheese slices (optional, your choice)

Directions

Step 1

Clean the portabella mushroom caps by gently wiping them with a damp paper towel to remove any dirt. Remove the stems if still attached.

Step 2

In a small bowl, whisk together balsamic vinegar, olive oil, minced garlic, soy sauce, dried oregano, salt, and black pepper.

Step 3

Place the mushroom caps in a shallow dish, gill side up. Pour the balsamic marinade evenly over the mushrooms, ensuring they are fully coated. Let them marinate for 10-15 minutes.

Step 4

While the mushrooms are marinating, preheat your grill or grill pan to medium-high heat.

Step 5

Slice the tomato and red onion into thin rounds. Set aside along with the lettuce leaves.

Step 6

Brush the grill grates with a little olive oil to prevent sticking. Place the marinated mushroom caps on the grill, gill side down, and cook for 4-5 minutes. Flip and cook for another 4-5 minutes until tender and slightly charred. If desired, add a slice of cheese on top during the last minute of cooking to melt.

Step 7

Toast the burger buns on the grill for 1-2 minutes until lightly golden.

Step 8

Assemble the burgers by spreading a tablespoon of mayonnaise on the bottom half of each bun. Layer with lettuce, grilled mushroom cap, tomato slice, red onion, and the top half of the bun.

Step 9

Serve immediately and enjoy your Grilled Balsamic Portabella Mushroom Burger!

Nutrition Facts

Serving size	(1227.5g)

Amount per serving	% Daily Value*
Calories	1855.0

Total Fat 115.5g	0%
Saturated Fat 32.4g	0%
Polyunsaturated Fat 2.8g
Cholesterol 176mg	0%
Sodium 5097.8mg	0%
Total Carbohydrate 145.8g	0%
Dietary Fiber 12.9g	0%
Total Sugars 43.9g
Protein 54.0g	0%

Vitamin D 52.0IU	0%
Calcium 1057.5mg	0%
Iron 8.8mg	0%
Potassium 2392.3mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 56.5%

Protein: 11.7%

Carbs: 31.7%