The Best Grilled Portobello Mushroom Burger
Experience the deliciousness of The Best Grilled Portobello Mushroom Burger, a satisfying and healthy alternative to traditional meat burgers. Juicy marinated portobello mushrooms are grilled to perfection and topped with melted Swiss cheese, fresh tomatoes, grilled onions, creamy avocado, and baby spinach. This burger is not just packed with flavor but also serves as a great option for vegetarians and anyone looking to enjoy a hearty meal without the guilt. Perfect for lunch, dinner, or backyard barbecues, this recipe is sure to impress even the most devoted meat lovers.
- Prep Time: 30 minutes
- Cook Time: 15 minutes
- Total Time: 45 minutes
- Yield: Serves 4
- Category: Main
- Method: Grilling
- Cuisine: Vegetarian
Ingredients
Scale
- 4 portobello mushroom caps
- 2 tbsp balsamic vinegar
- 1 tbsp low sodium soy sauce
- 1 tbsp olive oil
- 1 tbsp chopped rosemary
- 1–1/2 tsp Montreal steak seasoning
- 4 thick slices red onion
- 4 oz reduced-fat Swiss cheese (sliced thin)
- 4 thin slices tomato
- 1/2 avocado (sliced thin)
- baby spinach
- 4 whole wheat low-calorie buns
- 2 tablespoons fresh parsley, finely chopped
Instructions
- In a large mixing bowl, whisk together balsamic vinegar, soy sauce, olive oil, rosemary, and steak seasoning.
- Add portobello mushrooms and toss gently to coat; let them marinate for 20-30 minutes.
- Preheat the grill over medium heat; brush grates with oil.
- Grill marinated mushrooms for 5-7 minutes per side while basting with reserved marinade.
- Add Swiss cheese on top during the last minute of grilling until melted.
- Grill red onion slices for about 1 minute on each side and toast buns until golden brown.
- Assemble the burger: place spinach on bun followed by mushrooms, onions, tomatoes, and avocado.
Nutrition
- Serving Size: 1 burger (approximately 200g)
- Calories: 320
- Sugar: 3g
- Sodium: 480mg
- Saturated Fat: 4g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 38g
- Fiber: 8g
- Protein: 14g
- Cholesterol: 15mg